{"title":"Robert Charles Countersinks","description":"","products":[{"product_id":"5855-3-32-82","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/32 Pilot Diameter - 82° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision cutting tool engineered for repeatable countersinking in metalworking and precision engineering. Its 3-flute cutter and integral pilot guide the tool for concentric, clean countersinks, making it a reliable choice for aerospace, automotive, and general engineering work. The 3\/32 inch pilot diameter provides accurate alignment with your existing drill sizes, ensuring a consistent start every time.\n\u003c\/p\u003e \u003cp\u003e\nWith a tight pilot diameter tolerance of -0.0005\" to -0.0015\" and an 82° included angle, you get consistent seating depth and a smooth finish across materials. The result is repeatable, concentric countersinks that minimize rework and maximize productivity in demanding manufacturing environments.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: Built-in pilot guides the cutter for concentric countersinks and repeatable starts, reducing drift and ensuring true hole alignment on every job.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3‑Flute design for smooth cutting\u003c\/b\u003e: Three cutting edges remove material efficiently while minimizing vibration, delivering a clean finish even in tougher metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot diameter tolerance with 82° included angle\u003c\/b\u003e: Pilot diameter held to -0.0005\" to -0.0015\" for consistent, concentric results, with the 82° angle providing reliable seating across a range of applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink is designed to improve workflow by delivering predictable results, reducing setup time, and minimizing rework. Its precise tolerances and robust geometry help you achieve professional, consistent seating across aerospace, automotive, and general engineering projects, boosting overall productivity and part quality.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536640590,"sku":"5855-3\/32-82","price":35.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_4015e586-d4dc-4050-8d1f-c8898c788ad1.png?v=1770027864"},{"product_id":"5855-3-32-90","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/32 Pilot Diameter - 90° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision cutting tool designed for repeatable, accurately aligned countersinks in metalworking. With a 90° inclusive angle, a 3-flute cutting design, and an integral pilot, it keeps holes centered and delivers smooth cutting with minimal chatter, making it ideal for aerospace, automotive, and general engineering tasks.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Precise Alignment\u003c\/b\u003e: The built-in pilot centers the countersink in the bore, delivering true, concentric countersinks and reducing drift during cutting for reliable repeatability across parts and setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-Flute Design for Smooth Cutting\u003c\/b\u003e: The balanced 3-flute geometry enhances material removal, improves edge quality, and minimizes chatter, even in tougher materials, for cleaner finishes and faster cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight Pilot Diameter Tolerance (3\/32\")\u003c\/b\u003e: Pilot diameter is held to −0.0005\" to −0.0015\", ensuring consistent centering and dependable performance across production runs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis piloted countersink helps you achieve consistently precise countersinks, reducing rework and streamlining assembly. Coupled with strict manufacturing tolerances, it supports predictable results, improved part quality, and greater confidence in every machining operation—whether you’re working on high-precision components or everyday engineering projects.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536706126,"sku":"5855-3\/32-90","price":26.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_79b069de-555f-4ae9-a707-f360cb01e044.png?v=1770027869"},{"product_id":"5855-3-32-100","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/32 Pilot Diameter - 100° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is a precision cutting tool designed to countersink holes with consistent depth and perfect alignment. It features a 3-flute cutting design, an integral pilot, and a 100° included angle to deliver smooth cutting and reliable starts in precision machining applications.\n\u003c\/p\u003e \u003cp\u003e\nThe countersink uses a 3\/32\" pilot diameter and is manufactured to tight tolerances, with the pilot diameter held to −0.0005\" to −0.0015\", delivering consistent, concentric results ideal for aerospace, automotive, and general engineering use.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot with 3\/32\" diameter\u003c\/b\u003e: Guarantees precise hole alignment and repeatable countersinking for true starts and reduced rework.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting\u003c\/b\u003e: Efficient chip removal with minimal vibration, producing a cleaner finish and longer tool life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot diameter tolerance\u003c\/b\u003e: Pilot diameter held to −0.0005\" to −0.0015\", delivering consistently concentric countersinks for high-precision work.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nBy delivering precise alignment, smooth cutting, and repeatable tolerances, this tool helps you speed setup, reduce finishing steps, and achieve consistently high-quality countersinks. It supports demanding applications in aerospace, automotive, and general engineering, making it a trusted, reliable choice for professionals and hobbyists alike.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536738894,"sku":"5855-3\/32-100","price":26.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_d714dd23-1b95-419b-92bb-8794358ea52b.png?v=1770027873"},{"product_id":"5855-3-32-120","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/32 Pilot Diameter - 120° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is a precision tool built for accurate countersinking in machining where hole alignment matters. Its 3-flute design and integral pilot deliver a smooth, stable cut with reduced chatter, making it a reliable choice for aerospace, automotive, and general engineering work. The 3\/32 inch pilot diameter supports precise seating for standard hole sizes.\n\u003c\/p\u003e \u003cp\u003e\nManufactured with strict tolerances, the pilot diameter is held to −0.0005\" to −0.0015\", ensuring repeatable, concentric results from part to part and across multiple tools.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated pilot with 120° inclusive angle\u003c\/b\u003e: The integral pilot aligns the countersink with the bore and the 120° angle matches common chamfer requirements for accurate, clean countersinking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting\u003c\/b\u003e: The 3 cutting edges deliver efficient material removal, reduced chatter, and a high-quality finish even in tougher materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecise pilot diameter tolerance\u003c\/b\u003e: Pilot diameter held to −0.0005\" to −0.0015\" ensures repeatable, concentric countersinks across production runs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nWith its straight shank and precision engineering, this tool helps you complete countersinks in fewer passes, producing consistent depths and clean edges. The tight tolerances support dependable performance across aerospace, automotive, and general engineering applications, helping you reduce setup time, minimize rework, and improve overall part quality.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536771662,"sku":"5855-3\/32-120","price":26.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_eea3a955-49eb-4005-b050-09b0cc667e3a.png?v=1770027878"},{"product_id":"5855-1-8-82","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/8 Pilot Diameter - 82° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is engineered for precise and repeatable countersinking in precision machining applications. Featuring a 3-flute cutting design and an integral pilot, it ensures accurate hole alignment, smooth cutting action, and reduced chatter.\n\u003c\/p\u003e \u003cp\u003e\nDesigned for a 1\/8\" pilot diameter and an 82° included angle, the tool rides true in a straight shank and remains compatible with a wide range of holders. Manufactured to strict tolerances, the pilot diameter is held to −0.0005\" to −0.0015\", delivering consistent, concentric results ideal for aerospace, automotive, and general engineering use.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated pilot for precise hole alignment\u003c\/b\u003e: The integral pilot guides entry and centers the countersink, delivering accurate alignment and repeatable results across parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting and reduced chatter\u003c\/b\u003e: The three-flute geometry promotes efficient material removal, clean edges, and less vibration, extending tool life and improving surface finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot tolerance and 82° included angle for consistent seating\u003c\/b\u003e: Pilot diameter is held to −0.0005\" to −0.0015\", ensuring concentric countersinks, while the 82° angle provides standard seating geometry for common fasteners.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis combination of precise guidance, stable cutting action, and repeatable tolerances helps you speed up setup times, minimize scrap, and deliver consistent results across batches. Whether you’re working on aerospace components, automotive parts, or general engineering projects, this countersink supports high-quality finishes and dependable performance in CNC or manual operations, with a straight shank that plugs into your existing tooling setup for quick, reliable tool changes.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536869966,"sku":"5855-1\/8-82","price":36.34,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_3e7caa38-cefe-49dc-b5a5-2168907b96fd.png?v=1770027882"},{"product_id":"5855-1-8-90","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/8 Pilot Diameter - 90° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial piloted countersink is engineered for precise, repeatable countersinking in precision machining applications. With a 3-flute cutting design and an integral pilot, it delivers accurate hole alignment, smooth cutting action, and reduced chatter. The 90° inclusive angle and a 1\/8\" pilot diameter make it a versatile choice for aerospace, automotive, and general engineering work that requires clean, square recesses.\u003c\/p\u003e \u003cp\u003eManufactured to strict tolerances, the pilot diameter is held to −0.0005\" to −0.0015\", delivering consistent, concentric results across parts and programs.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for exact hole alignment\u003c\/b\u003e: Keeps countersink centered on the hole, reducing misalignment and ensuring repeatable depths in every part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth, efficient cutting\u003c\/b\u003e: Enables steady performance with better chip evacuation and less vibration and chatter during cuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot-diameter tolerance\u003c\/b\u003e: Guarantees concentric countersinks with every cycle, delivering consistent recess quality across production runs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Robet Charles Imperial piloted countersink, you gain reliable, repeatable recess quality that enhances joint fit and overall part accuracy. The integral pilot reduces setup time and the risk of misalignment, while the 3-flute geometry and tight tolerances deliver smooth cutting and consistent depth control. This makes it a dependable choice for demanding environments like aerospace and automotive manufacturing, as well as precision prototyping and general engineering tasks—helping you finish parts faster with fewer reworks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536902734,"sku":"5855-1\/8-90","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_6d85ba71-a1c1-4fa9-931e-0c4a0463cf53.png?v=1770027886"},{"product_id":"5855-1-8-100","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/8 Pilot Diameter - 100° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink is designed for precise, repeatable countersinking in precision machining applications. Featuring an integral pilot and a 3-flute cutting design, it helps achieve accurate hole alignment and a smooth cutting action.\u003c\/p\u003e \u003cp\u003eManufactured to strict tolerances, the pilot diameter is held to −0.0005\" to −0.0015\", delivering consistent, concentric results. The 100° included angle supports a standard countersink profile, ideal for aerospace, automotive, and general engineering use.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise hole alignment\u003c\/b\u003e: The built‑in pilot starts the countersink exactly where intended, promoting concentric results and reducing drift during cutting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting and reduced chatter\u003c\/b\u003e: The 3-flute geometry provides stable, efficient material removal for a clean finish and repeatable performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e1\/8 in pilot diameter with 100° countersink on a straight shank\u003c\/b\u003e: Tight, repeatable pilot size paired with a standard 100° profile and straight shank for reliable seating and compatibility with common tooling.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith these characteristics, the Robet Charles Imperial Piloted Countersink helps you deliver consistent, concentric countersinks across parts and assemblies. The integral pilot keeps the tool aligned with pre-drilled holes, while the 3-flute geometry and standard 100° angle produce a clean, uniform finish with minimal chatter. Tight pilot-diameter tolerances support repeatable results part after part, making it a dependable choice for aerospace, automotive, and general engineering applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536935502,"sku":"5855-1\/8-100","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_0209333c-d635-40aa-8bd6-1962be5d35bb.png?v=1770027891"},{"product_id":"5855-1-8-120","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/8 Pilot Diameter - 120° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial piloted countersink is built for precise, repeatable countersinking in precision machining. With a 3-flute cutting design and an integral pilot, it delivers accurate hole alignment, smooth cutting action, and reduced chatter, producing clean chamfers on every part.\u003c\/p\u003e \u003cp\u003eDesigned for aerospace, automotive, and general engineering applications, it maintains tight tolerances to ensure concentric results. The tool features a 1\/8\" pilot diameter and a 120° inclusive angle, enabling reliable chamfer creation in a single operation and minimizing rework.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral 1\/8\" pilot for exact hole alignment\u003c\/b\u003e: The built-in guide centers the countersink on the bore, delivering concentric chamfers and reducing deviations across repeated parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth, efficient cutting\u003c\/b\u003e: The geometry provides clean cutting action with steady chip removal and minimal vibration, even in tougher materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot diameter tolerance for repeatable results\u003c\/b\u003e: Pilot tolerance of −0.0005\" to −0.0015\" ensures consistent alignment and concentric countersinks from part to part.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith this countersink, you can expect faster setup, fewer passes, and consistently clean chamfers across batches. The precision pilot and robust geometry help you achieve reliable results from the first part to the last, improving workflow, reducing downtime, and enhancing overall machining performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418536968270,"sku":"5855-1\/8-120","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_76c846e5-5ef1-4dd3-94e4-ed3a0693535a.png?v=1770027895"},{"product_id":"5855-5-32-82","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 5\/32 Pilot Diameter - 82° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is engineered for precise, repeatable countersinking in precision machining. Designed for professionals across aerospace, automotive, and general engineering, it delivers accurate seating for fasteners with minimal runout. Its integral pilot and straight shank help ensure clean, concentric countersinks from first pass to last.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral 5\/32\" Pilot Diameter + Straight Shank\u003c\/b\u003e: Built-in pilot with a straight shank ensures precise hole alignment and effortless mounting in standard tool holders for quick setup and dependable performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute Design for Smooth Cutting\u003c\/b\u003e: The three-flute geometry provides efficient material removal with reduced chatter, yielding a clean, uniform countersink finish even in tougher materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e82° Included Angle with Tight Pilot Tolerance\u003c\/b\u003e: An 82° seating angle delivers reliable fastener flushness, while the pilot diameter is held to −0.0005\" to −0.0015\", ensuring repeatable, concentric results across production runs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nTogether, these features empower you to achieve consistent countersinks with minimal rework, faster cycle times, and reliable results batch after batch. The tool's precise pilot and robust geometry help maintain alignment and finish quality, making it a trusted choice for demanding applications in aerospace, automotive, and engineering shops alike.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537001038,"sku":"5855-5\/32-82","price":40.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_531ab77a-3e12-4b26-a51c-41c179a3ace4.png?v=1770027900"},{"product_id":"5855-5-32-90","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 5\/32 Pilot Diameter - 90° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is engineered for precise, repeatable countersinking in precision machining. With a 3-flute cutting design and an integral pilot, it delivers accurate hole alignment, smooth cutting action, and reduced chatter. The 90° inclusive angle supports consistent countersinks in a single operation, and the straight shank fits standard toolholders for reliable performance.\n\u003c\/p\u003e \u003cp\u003e\nDesigned for aerospace, automotive, and general engineering work, this countersink is manufactured to tight tolerances. The pilot diameter is held to −0.0005\" to −0.0015\", delivering concentric, repeatable results that help you achieve clean finishes and accurate seating.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: The built-in pilot centers the countersink on the hole, reducing wandering and ensuring concentric seating for reliable results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth, efficient countersinking\u003c\/b\u003e: Three cutting edges provide stable cutting action and efficient chip evacuation, delivering clean, uniform finishes with reduced chatter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight-tolerance pilot diameter with 90° countersink\u003c\/b\u003e: Pilot diameter held to −0.0005\" to −0.0015\" and a 90° countersink create repeatable depths and precise seating, ideal for critical assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis combination helps you streamline workflows by delivering repeatable, concentric countersinks with minimal chatter. Expect cleaner finishes, precise seating, and fewer reworks, translating to faster setup, higher first-pass success, and dependable performance across demanding aerospace, automotive, and general engineering applications.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537033806,"sku":"5855-5\/32-90","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_c5b38c9f-a2f3-4058-b450-033e505de43f.png?v=1770027906"},{"product_id":"5855-5-32-100","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 5\/32 Pilot Diameter - 100° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial piloted countersink is engineered for precise, repeatable countersinking in precision machining. With a 3-flute cutting design and an integral pilot on a straight shank, it delivers accurate hole alignment, smooth cutting action, and reduced chatter. The 5\/32\" pilot diameter and 100° included angle make it a reliable choice for aerospace, automotive, and general engineering applications. The pilot diameter tolerance is held to −0.0005\" to −0.0015\", delivering consistent, concentric results across production runs.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise hole alignment\u003c\/b\u003e: The integrated pilot keeps the countersink centered with the hole during cutting, ensuring consistent entrance and seating of fasteners and reducing the chance of off-center countersinks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot-diameter tolerance (−0.0005\" to −0.0015\")\u003c\/b\u003e: Maintains concentricity from part to part, so each countersink matches the intended hole pattern for reliable assembly and reduced rework.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design with 100° countersink angle\u003c\/b\u003e: Provides efficient material removal, smoother cutting, and a clean, flush finish with less chatter, even in harder materials.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUsing the Robet Charles Imperial piloted countersink helps you complete countersinking tasks faster and more reliably. You gain repeatable, concentric countersinks that align with your hole patterns, reduce rework, and support high-quality assemblies across aerospace, automotive, and general engineering projects. The straight shank design, integrated pilot, and tight tolerances work together to minimize setup time and maximize first-pass acceptance, delivering consistent, professional finishes every time.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537099342,"sku":"5855-5\/32-100","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_cda1b22d-395b-4c8f-a1e6-5ed0092e4ea6.png?v=1770027909"},{"product_id":"5855-5-32-120","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 5\/32 Pilot Diameter - 120° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision cutting tool engineered for clean, repeatable countersinks with a built-in pilot for maximum alignment and control. Its 3-flute design, integral pilot, and straight shank are optimized for high-precision machining, keeping holes concentric and chatter-free across multiple passes. With a 5\/32\" pilot diameter and a 120° included angle, it is ideal for aerospace, automotive, and general engineering applications where consistent depth and finish matter.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot (5\/32\" Diameter) for Exact Alignment\u003c\/b\u003e: The built-in pilot guides the countersink through the hole, delivering concentric countersinks with each pass and preventing wandering on tough materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-Flute Design with 120° Included Angle for Smooth, Consistent Cuts\u003c\/b\u003e: Balanced cutting action reduces chatter and provides a clean finish while efficiently forming the countersink across standard depths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight Pilot Diameter Tolerances for Consistency\u003c\/b\u003e: Pilot diameter held to −0.0005\" to −0.0015\" ensures repeatable, concentric results across production runs and different workpieces.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nBy delivering precise, repeatable countersinks with concentric accuracy, this tool helps you reduce setup time, cut fewer pilot holes, and minimize rework. The robust geometry and tight tolerances translate into consistent finishes, improved seating of fasteners, and greater predictability across parts and runs. Whether you’re manufacturing aerospace components, automotive brackets, or precision-engineered assemblies, the Robet Charles Imperial Piloted Countersink supports a reliable, high-quality result every time.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537132110,"sku":"5855-5\/32-120","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_367ff941-335e-4c04-a6c7-a300bf60e5e4.png?v=1770027914"},{"product_id":"5855-3-16-82","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/16 Pilot Diameter - 82° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink is a precision tool designed for repeatable countersinking in high-accuracy machining. Its integral pilot and 3-flute design ensure accurate hole alignment, smooth cutting action, and reduced chatter across aerospace, automotive, and general engineering applications.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e3‑Flute Cutting Design for Smooth, Clean Countersinks\u003c\/b\u003e: The three flutes provide efficient cutting and better chip evacuation, delivering a cleaner chamfer with reduced vibration for consistent results across materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot with Tight Tolerances\u003c\/b\u003e: Built-in pilot diameter is held to −0.0005\" to −0.0015\", ensuring concentric countersinks and repeatable hole alignment without the need for a separate pilot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e82° Inclusive Angle with 3\/16\" Integral Pilot and Straight Shank\u003c\/b\u003e: Delivers a precise chamfer profile and compatibility with standard tooling setups for reliable engagement and rigidity in challenging setups.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eTogether, these features help you complete countersinking tasks with greater speed and confidence. The integrated pilot and tight tolerances minimize misalignment and chatter, delivering consistent holes and clean chamfers that improve surface finish. With a rigid straight shank and standard 82° geometry, you can rely on predictable performance across aerospace, automotive, and general engineering projects, reducing downtime and helping keep production on schedule.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537164878,"sku":"5855-3\/16-82","price":41.87,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_1c3b27c3-4d29-4c6d-a43e-5760e7448f52.png?v=1770027918"},{"product_id":"5855-3-16-90","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/16 Pilot Diameter - 90° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial piloted countersink is a precision cutting tool designed for accurate, repeatable countersinking in CNC and manual machining. With a 3-flute cutting design and an integral pilot, it guides the chamfer for precise hole alignment and a smooth cut, reducing chatter. It’s ideal for aerospace, automotive, and general engineering work where consistent chamfer quality matters.\u003c\/p\u003e \u003cp\u003eDesigned with a built‑in 3\/16\" pilot diameter and a 90° inclusive angle, this countersink delivers reliable, concentric chamfers every time. The integral pilot diameter is held to -0.0005\" to -0.0015\", ensuring repeatable results across production runs. The straight shank fits standard milling or drilling setups, making it easy to integrate into existing workflows.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Accurate Hole Alignment\u003c\/b\u003e: The built-in pilot guides the countersink for concentric chamfers and reduced deviation, improving hole quality and fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute, 90° Countersink Geometry\u003c\/b\u003e: The 3-flute design, paired with a 90° inclusive angle, delivers a clean, controlled chamfer and efficient material removal with minimal chatter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight Pilot Diameter Tolerance\u003c\/b\u003e: Pilot diameter is held at -0.0005\" to -0.0015\", delivering repeatable, concentric results across production runs and materials.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis countersink supports faster setup, improved finish quality, and reduced rework by delivering consistent chamfers that align precisely with pre-drilled holes. The fixed integral pilot and tight tolerances translate to reliable performance across aerospace, automotive, and general engineering projects, making it a trusted addition to your machining toolkit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537197646,"sku":"5855-3\/16-90","price":32.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_700737e4-bc00-4cd6-be2e-a72a0bbd0c57.png?v=1770027923"},{"product_id":"5855-3-16-100","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/16 Pilot Diameter - 100° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is a precision cutting tool designed for repeatable countersinking in high-accuracy machining. With a 3-flute cutting design and an integral pilot, it delivers accurate hole alignment, smooth cutting action, and reduced chatter.\n\u003c\/p\u003e \u003cp\u003eManufactured to tight tolerances, the pilot diameter is held to −0.0005\" to −0.0015\", providing consistent, concentric results ideal for aerospace, automotive, and general engineering applications including production runs and prototypes.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Accurate Alignment\u003c\/b\u003e: Built-in pilot guides the countersink into the hole center, ensuring precise alignment and reducing drift during entry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute Design with 100° Included Angle\u003c\/b\u003e: Three-flute geometry delivers smooth cutting, efficient chip evacuation, and a clean countersink finish, with a 100° included angle for consistent results across common materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3\/16 in Pilot Diameter with Tight Tolerance\u003c\/b\u003e: Pilot diameter is held to −0.0005\" to −0.0015\", ensuring repeatable, concentric countersinks and reliable performance across aerospace, automotive, and general engineering applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned to streamline setups and deliver consistent, concentric countersinks, this tool helps you move quickly from roughing to finishing with confidence. The integrated pilot reduces drift and chatter, so you can trust first-pass accuracy across parts. With the pilot diameter tightly controlled, you’ll see repeatable results from part to part, minimizing rework and supporting high-quality assemblies in aerospace, automotive, and general engineering environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537230414,"sku":"5855-3\/16-100","price":32.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_14583ecc-15e7-4f74-8fdf-fd4f06a9535d.png?v=1770027927"},{"product_id":"5855-3-16-120","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 3\/16 Pilot Diameter - 120° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial piloted countersink is engineered for precise, repeatable countersinking in precision machining applications. Featuring a 3-flute cutting design and an integral pilot, it ensures accurate hole alignment, smooth cutting action, and reduced chatter. With a 3\/16\" pilot diameter and a 120° included angle, this tool is designed for tight tolerances and repeatable results across aerospace, automotive, and general engineering work. The straight shank enables easy mounting in standard toolholders for quick setup and reliable performance.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral 3-Flute Design\u003c\/b\u003e: Delivers smooth cutting action and efficient material removal, minimizing chatter for cleaner, more consistent countersinks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBuilt-In Pilot for Exact Alignment\u003c\/b\u003e: The integral pilot guides the countersink to the correct center, helping maintain concentricity and reducing misalignment during production runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecision Pilot Diameter (3\/16\")\u003c\/b\u003e: Pilot diameter is tightly held to −0.0005\" to −0.0015\", with a 120° included angle, delivering repeatable, concentric results across parts.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe tool is designed to help you finish parts with reliable accuracy, reduce rework, and keep workflows moving smoothly—especially when working on high-precision components in aerospace, automotive, or general engineering applications. Its combination of a tight pilot tolerance, robust 3-flute geometry, and rigid straight shank supports consistent performance from setup through final pass.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537263182,"sku":"5855-3\/16-120","price":32.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_57abcb57-7176-44e5-8f5b-18dfce731046.png?v=1770027932"},{"product_id":"5855-7-32-82","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 7\/32 Pilot Diameter - 82° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is built for precise, repeatable countersinking in precision machining. Featuring a 3-flute cutting design, an integral pilot, and a straight shank, it aligns holes accurately while delivering a smooth cutting action with reduced chatter. The tool is designed for demanding applications across aerospace, automotive, and general engineering, and it includes a 82° included angle with a 7\/32\" pilot diameter to fit standard drilled holes.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Accurate Hole Alignment\u003c\/b\u003e: The built-in pilot guides the countersink exactly where you need it, ensuring true starts and consistent concentric results every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute Design for Smooth, Clean Countersinking\u003c\/b\u003e: Three cutting edges provide efficient material removal with reduced vibration, yielding a clean finish on precision parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight Pilot Diameter Tolerance for Consistent Results\u003c\/b\u003e: Pilot diameter is held to −0.0005\" to −0.0015\", delivering repeatable, concentric countersinking across multiple operations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nWith its precise piloted design, controlled tolerances, and robust 82° countersink geometry, this tool helps you reduce rework, shorten setup times, and achieve dependable results across multiple parts and runs. It’s a trusted choice for professionals seeking reliable, accurate countersinking in aerospace, automotive, and general engineering work.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537295950,"sku":"5855-7\/32-82","price":43.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_400ce37f-03a0-442a-9746-cc0c062cec09.png?v=1770027936"},{"product_id":"5855-7-32-90","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 7\/32 Pilot Diameter - 90° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink is engineered for precise and repeatable countersinking in precision machining applications. Featuring a 3-flute cutting design and an integral pilot, it ensures accurate hole alignment, smooth cutting action, and reduced chatter.\u003c\/p\u003e \u003cp\u003eThis countersink uses a 7\/32-inch pilot diameter and a 90° inclusive countersink angle. The pilot diameter is held to −0.0005\" to −0.0015\", delivering consistent, concentric results ideal for aerospace, automotive, and general engineering use.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot guides alignment\u003c\/b\u003e: Keeps the countersink centered in the drilled hole for accurate seating and reduced misalignment, supporting consistent results across parts and setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting\u003c\/b\u003e: Efficient chip evacuation and a cleaner finish with less vibration, helping you achieve flush seating with fewer passes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot diameter tolerance\u003c\/b\u003e: The −0.0005\" to −0.0015\" specification on the pilot diameter ensures repeatable, concentric countersinks across tools and runs, reducing rework and variability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its precision tolerances and imperial sizing, this countersink delivers reliable performance in aerospace, automotive, and general engineering applications. It helps you speed setup, improve seating quality, and maintain consistent results across production runs, making it a dependable choice for professional shops and demanding projects alike.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537328718,"sku":"5855-7\/32-90","price":33.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_ab7bb849-4693-4f0d-ac0a-23babcc45312.png?v=1770027941"},{"product_id":"5855-7-32-100","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 7\/32 Pilot Diameter - 100° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is a precision countersinking tool designed for repeatable, accurate hole preparation in precision machining. Its 3-flute design and integral pilot deliver true hole alignment, smooth cutting action, and reduced chatter, making it ideal for aerospace, automotive, and general engineering applications.\n\u003c\/p\u003e \u003cp\u003e\nWith a straight shank and a 100° included angle, this countersink produces clean, flush seating across production runs. The pilot diameter is tightly controlled at 7\/32\" and held to −0.0005\" to −0.0015\", ensuring concentric, repeatable results in every job.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for true alignment\u003c\/b\u003e: Guides the tool precisely into the drilled hole, delivering accurate starts and consistent countersink depth with less chance of wander or misalignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting\u003c\/b\u003e: Provides stable engagement, efficient material removal, and reduced chatter for a cleaner finish and longer tool life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight pilot-diameter tolerance\u003c\/b\u003e: Pilot diameter held to −0.0005\" to −0.0015\" ensures repeatable, concentric results across parts and setups.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis combination of precise geometry, robust tolerance control, and reliable performance helps you speed up setup, minimize rework, and achieve consistent countersink quality on aerospace, automotive, and general engineering projects. Manufactured to strict tolerances, the Robet Charles Imperial piloted countersink offers dependable, repeatable results you can count on in demanding machining environments.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537361486,"sku":"5855-7\/32-100","price":33.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_604ba260-7a16-4832-90b5-e89d65bd61e8.png?v=1770027945"},{"product_id":"5855-7-32-120","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 7\/32 Pilot Diameter - 120° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink is built for precise, repeatable countersinking in precision machining. Its straight shank fits a wide range of holders, while the integrated pilot starts holes true to reduce wandering and rework.\u003c\/p\u003e \u003cp\u003eFeaturing a 3-flute cutting design and an integral pilot, it ensures accurate hole alignment, smooth cutting action, and reduced chatter. Manufactured to strict tolerances, the pilot diameter is held to −0.0005\" to −0.0015\", delivering consistent, concentric results ideal for aerospace, automotive, and general engineering use.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute cutting design\u003c\/b\u003e: Provides efficient material removal with smooth cutting action and controlled chip evacuation, helping you achieve cleaner countersinks with less vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot with 7\/32\" diameter\u003c\/b\u003e: Built-in pilot centers the countersink on the hole, reducing wandering and delivering repeatable, concentric results across jobs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e120° inclusive angle with tight tolerances\u003c\/b\u003e: The standard 120° angle supports a wide range of applications, while the pilot diameter is tightly controlled (−0.0005\" to −0.0015\"), ensuring reliable, repeatable countersinks across parts.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis combination of geometry and precision helps you streamline setups, reduce rework, and achieve consistent flush, flat-bottom countersinks that improve joint fit and overall part quality.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418537394254,"sku":"5855-7\/32-120","price":33.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_8a0e08c5-e134-4a06-aecf-612dbb63e9b8.png?v=1770027950"},{"product_id":"5855-1-4-82","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/4 Pilot Diameter - 82° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision cutting tool designed for repeatable countersinking in high-accuracy machining. It features a 3-flute cutter and an integral pilot, delivering accurate hole entry, smooth cutting action, and reduced chatter for demanding applications in aerospace, automotive, and general engineering.\n\u003c\/p\u003e\n\u003cp\u003e\nWith an 82° included angle and a 1\/4 in pilot diameter, the pilot diameter is held to −0.0005 in to −0.0015 in, delivering consistently centered countersinks and concentric seating of fasteners for reliable, high-quality results across parts and setups.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated pilot with straight shank\u003c\/b\u003e: Keeps countersinks centered and aligns precisely with drilled holes, while the straight shank provides dependable mounting in standard milling and drilling setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting\u003c\/b\u003e: Delivers efficient material removal with reduced vibration for clean holes and better surface finish, even in tough metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e1\/4 in pilot diameter with tight tolerance\u003c\/b\u003e: Held to -0.0005 in to -0.0015 in, ensuring concentric countersinks and repeatable seating across parts.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink helps streamline production by delivering precise, repeatable countersinks on first pass, reducing setup time, minimizing scrap, and ensuring accurate fastener seating. Built to withstand demanding production environments, its robust design and tight tolerances support long tool life and consistent results across aerospace, automotive, and general engineering projects.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538082382,"sku":"5855-1\/4-82","price":45.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_acdbec03-40d8-4854-af65-353a2877bb6f.png?v=1770027954"},{"product_id":"5855-1-4-90","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/4 Pilot Diameter - 90° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is a precision machining tool designed for accurate, repeatable countersinking in both CNC and manual operations. It features a straight shank, a 3-flute cutter, and an integral pilot to keep the hole aligned and the cut smooth. With a 90° countersink angle and a 1\/4\" pilot diameter, it’s built for common fastener seats and consistent results across jobs.\n\u003c\/p\u003e \u003cp\u003eManufactured to tight tolerances, the pilot diameter is held to −0.0005\" to −0.0015\", delivering concentric, repeatable countersinks ideal for aerospace, automotive, and general engineering work.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Precise Alignment\u003c\/b\u003e: Keeps the countersink centered in the drilled hole, reducing wander and improving repeatability across parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute Design for Smooth Cutting and Reduced Chatter\u003c\/b\u003e: Balanced geometry provides clean entry, better surface finish, and longer tool life through efficient chip evacuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTight Pilot Diameter Tolerances (1\/4\" Pilot)\u003c\/b\u003e: Pilot diameter held to −0.0005\" to −0.0015\" ensures consistent, concentric countersinks across batches and production runs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nUsing this countersink helps you improve workflow by delivering consistent hole quality and flush fastener seating, reducing rework and setup time. The robust design tolerates demanding shop conditions, giving you confidence in every machining job, while the straight shank ensures quick, reliable compatibility with standard holders.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538115150,"sku":"5855-1\/4-90","price":37.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_6673119a-fc22-4220-af30-03ab712687fe.png?v=1770027959"},{"product_id":"5855-1-4-100","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/4 Pilot Diameter - 100° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision cutting tool engineered for repeatable countersinking in high-accuracy machining. With an integral pilot and 3-flute design, it consistently aligns the hole, delivers a smooth cutting action, and minimizes chatter so you can trust your first-time accuracy on every part—from aerospace fasteners to automotive components and general engineering applications.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral 1\/4\" pilot for precise start\u003c\/b\u003e: The built-in pilot guides the countersink into position, ensuring accurate alignment at the outset of each cut and reducing wandering for concentric results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth, efficient cutting\u003c\/b\u003e: The 3-flute geometry provides steady chip evacuation, a cleaner surface finish, and lower cutting forces for reliable performance across materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank, 100° countersink with tight tolerances\u003c\/b\u003e: Designed for easy mounting in standard holders, while the 100° inclusive angle and a pilot diameter held to −0.0005\" to −0.0015\" deliver repeatable, concentric countersinks in aerospace, automotive, and general engineering work.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink helps streamline your workflow by enabling precise starts, clean finishes, and dependable performance in demanding materials. With its tighter pilot tolerance and robust geometry, you can reduce rework, improve dimensional fidelity, and boost overall productivity on critical assemblies.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538147918,"sku":"5855-1\/4-100","price":37.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_484d859a-6f3b-4b59-b228-27488b56e2da.png?v=1770027963"},{"product_id":"5855-1-4-120","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1\/4 Pilot Diameter - 120° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial piloted countersink is a precision cutting tool designed for repeatable countersinking in high-accuracy machining. It blends a 3-flute cutting design with an integral pilot to guide entry, ensuring hole alignment and a clean, burr-free finish with reduced chatter. The 120° inclusive angle and straight shank make it a reliable choice for a wide range of applications, from aerospace to automotive and general engineering.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for true hole alignment\u003c\/b\u003e: Guides the countersink precisely into the drilled hole, delivering consistent positioning and reducing rework.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting\u003c\/b\u003e: Provides efficient chip evacuation and a clean, even finish with less vibration and chatter during use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecise pilot-diameter tolerance\u003c\/b\u003e: Pilot diameter held to −0.0005\" to −0.0015\", ensuring repeatable, concentric countersinks across materials and setups.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nDesigned for reliability in aerospace, automotive, and general engineering workflows, this countersink helps you achieve accurate, flush seating with fewer adjustments. The combination of a stable straight shank, precise pilot, and controlled cutting dynamics supports faster setups, fewer rejects, and consistently high-quality results across production runs.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538180686,"sku":"5855-1\/4-120","price":37.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_fe7d226f-2dd6-4516-a559-b90fddc6ffbd.png?v=1770027967"},{"product_id":"5801","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/32 Pilot Diameter - 90° Inclusive Angle - 3\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision tool designed for accurate, repeatable countersinking of pre-drilled holes. With an integral pilot and a 3-flute cutting geometry, it delivers clean, professional finishes across steel, aluminium, and plastics. This countersink is built for both workshop use and production environments where consistency and reliability matter.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: Ensures the countersink starts true in the hole, delivering concentric countersinking and reducing wandering or chatter for a smooth, accurate finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting and swarf control\u003c\/b\u003e: Balanced cutting action with efficient chip evacuation, providing steady performance and reduced clogging in a range of materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank with defined dimensions\u003c\/b\u003e: 3\/16\" body diameter and 3\/32\" pilot diameter ensure secure mounting and predictable depth control in standard setups.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nDesigned to deliver dependable results day after day, this countersink helps you speed up setup, reduce rework, and achieve consistent, high-quality finishes in a variety of projects—from fabrication shop runs to maintenance and repair tasks.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538213454,"sku":"5801","price":26.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_fa5c9c00-0819-44a9-8662-61eb4f42f534.png?v=1770027972"},{"product_id":"5805","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/32 Pilot Diameter - 90° Inclusive Angle - 1\/4 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is built for precise countersinking of pre-drilled holes. With a precision ground integral pilot and a 90° included angle, it guides cleanly into the hole and delivers a chatter-free cut for a professional finish every time.\n\u003c\/p\u003e \u003cp\u003e\nDesigned for both workshop and production environments, this countersink’s integral pilot locks into the pre-drill for repeatable starts, while the straight shank and 3-flute geometry provide reliable performance across steel, aluminium, and plastics. Its robust construction is intended for long-lasting use in demanding projects.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: The built-in pilot guides entry and centers the countersink, reducing wandering and chatter for a consistent countersink from start to finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute geometry for smooth, stable cutting\u003c\/b\u003e: The 3-flute design delivers steady cutting action, better swarf evacuation, and a cleaner finish on a variety of materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRigid straight shank with standard sizing\u003c\/b\u003e: 1\/4\" body diameter and a 3\/32\" pilot diameter on a straight shank, designed for easy mounting in drills, mills, and tool holders common to most setups.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink supports efficient workflows by delivering repeatable depth and surface quality, reducing rework and cycle time. Whether refining metalwork, plastic fabrication, or composite projects, it provides dependable performance, helps protect your workpiece margins, and extends tool life through controlled, predictable cutting.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538246222,"sku":"5805","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_1967c14a-d0a3-4512-a1d5-3eccfc13fdb5.png?v=1770027976"},{"product_id":"5802","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/32 Pilot Diameter - 100° Inclusive Angle - 3\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robert Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is designed to deliver accurate countersinking for pre-drilled holes. Its integral pilot ensures precise alignment and chatter-free cutting, producing a clean, professional finish every time.\n\u003c\/p\u003e\n\u003cp\u003e\nThe 3-flute design provides smooth cutting action, enhanced stability, and efficient swarf evacuation, making it suitable for a range of materials including steel, aluminium, and plastics. Manufactured to high quality standards, this countersink is built for both workshop and production environments where precision and reliability matter.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Precise Alignment\u003c\/b\u003e: The precision-ground integral pilot keeps the countersink centered in the pre-drilled hole, reducing drift and delivering a clean, flush countersink with minimal chatter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-Flute Design for Smooth Cutting\u003c\/b\u003e: The 3-flute geometry offers a smoother cutting action, greater stability, and efficient swarf evacuation for consistent results across steel, aluminium, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDefined Geometry with Robust Shank\u003c\/b\u003e: Straight shank with a 100° inclusive angle, 3\/16\" body diameter, and 3\/32\" pilot diameter provide repeatable, reliable countersinks and compatibility with standard holders.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nIn use, this countersink helps you complete holes with professional precision, improving workflow and reducing rework. The integral pilot and 3-flute design work together to deliver reliable performance across common workshop materials, while the rigid straight shank and precise geometry support steady cutting and long tool life.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538278990,"sku":"5802","price":26.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_9e2397f6-327c-4a84-a872-076383295164.png?v=1770027981"},{"product_id":"5806","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/32 Pilot Diameter - 100° Inclusive Angle - 1\/4 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is designed for accurate countersinking of pre-drilled holes. The precision-ground integral pilot guides the cutter to align perfectly with the hole, delivering a chatter-free cut and a clean, professional finish every time.\n\u003c\/p\u003e\n\u003cp\u003e\nThe 3-flute design provides smooth cutting action and increased stability, while efficient swarf evacuation helps keep the work surface clear. This countersink works across a variety of materials, including steel, aluminium, and plastics, making it a versatile choice for both workshops and production environments. It features a 3\/32 inch pilot diameter, a 100° included angle, and a 1\/4 inch body diameter for compatibility with standard setups.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Precise Alignment and Clean Start\u003c\/b\u003e: The precision-ground integral pilot ensures the countersink begins exactly where intended, reducing chatter and delivering a flush, professional finish every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute Design for Smooth Cutting and Efficient Swarf Evacuation\u003c\/b\u003e: Three flutes provide stable, fast cutting with effective debris removal, minimizing clogging and heat build-up for consistent results on steel, aluminium, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRigid Straight Shank for Reliable Fit and Long-Term Durability\u003c\/b\u003e: The straight shank, sized for imperial tooling systems, ensures easy setup in standard chucks and secure, repeatable performance in busy work environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\nThis countersink helps you streamline workflows by delivering precise alignment, a superior surface finish, and dependable performance across common materials. The integrated pilot reduces setup time and chatter, while robust construction supports sustained use in both individual shops and production lines, enabling faster project completion with fewer reworks.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538311758,"sku":"5806","price":30.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_10dd5020-6f63-4785-88cd-6b91f3379ef5.png?v=1770027985"},{"product_id":"5804","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/32 Pilot Diameter - 100° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink with a straight shank is engineered for precise, repeatable countersinking of pre-drilled holes. Its precision-ground integral pilot ensures perfect alignment and chatter-free cutting, delivering a clean, professional finish every time.\n\u003c\/p\u003e \u003cp\u003e\nThe 3-flute design provides smooth cutting action, improved stability, and efficient swarf evacuation, making it suitable for a range of materials including steel, aluminium, and plastics. Manufactured to high quality standards, this countersink is ideal for both workshop and production environments where precision and reliability matter.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePrecision-aligned integral pilot\u003c\/b\u003e: ensures perfect alignment and chatter-free cutting for a clean, professional finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSmooth 3-flute cutting and swarf evacuation\u003c\/b\u003e: delivers stable performance with efficient chip removal, reducing heat and improving surface finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDefined 100° geometry with 3\/32\" pilot and 3\/8\" body\u003c\/b\u003e: compatible with standard pre-drilled holes and provides robust rigidity across steel, aluminium, and plastics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nWith its integrated pilot and robust straight shank, this countersink delivers consistent, flush countersinks that reduce rework and speed up assembly. The combination of 100° geometry, 3\/32\" pilot, and 3\/8\" body diameter provides reliable performance in both busy workshops and production environments, giving you confidence in every hole you countersink.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538344526,"sku":"5804","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_a416c45c-4d2a-42f2-a305-cac514c20685.png?v=1770027990"},{"product_id":"5803","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/32 Pilot Diameter - 120° Inclusive Angle - 3\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robert Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is designed for accurate and consistent countersinking of pre-drilled holes. Featuring a precision ground integral pilot (3\/32\" pilot diameter) that ensures perfect alignment and chatter-free cutting, it delivers a clean, professional finish every time.\n\u003c\/p\u003e \u003cp\u003e\nThe 3-flute design provides smooth cutting action, improved stability, and efficient swarf evacuation, making it ideal for steel, aluminium, and plastics. With a 120° inclusive angle and a 3\/16\" body diameter, this countersink uses a straight shank for reliable seating and compatibility with a wide range of tooling setups. Manufactured to high quality standards, it's suitable for both workshop and production environments where precision and reliability are essential.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Precise Alignment\u003c\/b\u003e: The precision-ground integral pilot ensures perfect alignment with pre-drilled holes, reducing chatter and delivering a clean countersink finish every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute Design for Smooth Cutting and Efficient Swarf Evacuation\u003c\/b\u003e: The 3-flute geometry provides stable cutting action and rapid material removal across steel, aluminium, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight Shank with 3\/16\" Body Diameter and 120° Angle\u003c\/b\u003e: Compatible with standard chucks and fixtures while delivering consistent countersink depth and a clean chamfer every pass.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nDesigned for reliability in both workshop and production settings, this countersink helps you achieve repeatable results, reduce rework, and speed up assembly by delivering precise, professional-quality countersinks with every cut.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538410062,"sku":"5803","price":26.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_29234e59-1f11-4e51-a150-d11455f03cca.png?v=1770027994"},{"product_id":"5807","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/32 Pilot Diameter - 120° Inclusive Angle - 1\/4 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision tool designed to create accurate, clean countersinks in pre-drilled holes. With an integral 3\/32\" pilot and a 120° inclusive angle, it aligns perfectly with your bore to deliver a consistent chamfer every time. The 1\/4\" body diameter and straight shank provide stiffness and compatibility with standard countersink holders, making it suitable for both small workshops and production environments.\n\u003c\/p\u003e \u003cp\u003e\nThis countersink is engineered for reliability across common materials—steel, aluminium, and plastics—delivering chatter-free cutting, smooth surfaces, and minimal rework. Its precision-ground geometry and robust construction are built to withstand frequent use in busy shops while maintaining repeatable results.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Precise Alignment\u003c\/b\u003e: The built-in 3\/32\" pilot guides the cutter, ensuring exact alignment with the pre-drilled hole and reducing chatter for a clean, repeatable countersink.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-Flute Design for Smooth Cutting and Efficient Swarf Evacuation\u003c\/b\u003e: The 3-flute geometry delivers steady cutting action, improved stability, and fast removal of chips across steel, aluminium, and plastics, minimizing clogging and deflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRigid Straight Shank with 1\/4\" Body Diameter\u003c\/b\u003e: A straight shank fits standard tool holders, while the 1\/4\" body diameter provides rigidity and consistent seating, supporting uniform results even in tougher materials, with a 120° inclusive angle for a reliable chamfer.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis combination of precision pilot, stable 3-flute cutting, and robust construction translates to faster setups, fewer passes, and consistently flush countersinks across a range of materials. It helps you reduce rework, improve edge quality, and maintain high production output without sacrificing accuracy or reliability.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538475598,"sku":"5807","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_3433154e-a70a-47ac-8af8-a73361ecfa18.png?v=1770027998"},{"product_id":"5809","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 90° Inclusive Angle - 1\/4 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is designed for accurate and consistent countersinking of pre-drilled holes.With a precision ground integral pilot, it ensures perfect alignment and chatter-free cutting, delivering a clean, professional finish every time.\n\u003c\/p\u003e \u003cp\u003e\nThe 3-flute design provides smooth cutting action, improved stability, and efficient swarf evacuation, making it ideal for use on a range of materials including steel, aluminium, and plastics. Manufactured to high quality standards, this countersink is suitable for both workshop and production environments where precision and reliability are essential.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: The precision-ground pilot centers the countersink in pre-drilled holes, ensuring accurate starts, reducing chatter, and delivering a consistent, clean chamfer every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting\u003c\/b\u003e: The 3-flute geometry provides stable cutting action, efficient swarf evacuation, and a reliable finish on steel, aluminum, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank with exact sizing\u003c\/b\u003e: 1\/8\" pilot diameter and 1\/4\" body diameter with a 90° included angle ensure compatibility with standard holders and deliver repeatable countersinks across materials.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink helps you improve workflow by delivering repeatable, professional chamfers with minimal rework, across common engineering and fabrication materials. The integrated pilot simplifies setup, reduces the risk of walk-out, and the robust design withstands busy shop environments, making it a dependable choice for both small workshops and production lines.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538508366,"sku":"5809","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_63046733-9cc4-424f-a83f-a952745cdbd6.png?v=1770028003"},{"product_id":"5816","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 90° Inclusive Angle - 5\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is a precision tool designed for accurate countersinking of pre-drilled holes. The integral pilot ensures perfect alignment with your hole, delivering a chatter-free cut and a clean, professional chamfer every time.\n\u003c\/p\u003e \u003cp\u003e\nThis straight shank countersink features a 3-flute design for smooth cutting action, enhanced stability, and efficient swarf evacuation. With a 1\/8 inch pilot diameter, 90° included angle, and a 5\/16 inch body diameter, it is built to high manufacturing standards for both workshop and production environments handling steel, aluminium, and plastics.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot alignment\u003c\/b\u003e: Delivers precise hole alignment and a chatter-free cut for consistently clean countersinks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute performance\u003c\/b\u003e: Provides smoother cutting, greater stability, and efficient swarf removal across multiple materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRobust straight shank\u003c\/b\u003e: Ensures reliable seating in standard holders and long tool life for demanding workloads.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nDesigned for reliable, repeatable results, this countersink helps you finish holes with professional quality quickly and with less rework. Its precision geometry and durable construction support efficient workflows in both busy workshops and production environments, giving you confidence with every cut.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538573902,"sku":"5816","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_0cfa37dc-a278-4d2c-8356-161ab10ef05f.png?v=1770028007"},{"product_id":"5825","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 90° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink is a precision countersinking tool designed for accurate, flush finishes on pre-drilled holes. It features a 1\/8\" integral pilot, a 90° included angle, and a 3\/8\" body diameter to ensure precise alignment and clean bevels across steel, aluminium, and plastics. The straight shank accepts standard chucks, making it suitable for both workshop use and production environments where repeatable results matter.\u003c\/p\u003e\n\u003cp\u003eThe 3-flute design delivers smooth cutting and efficient swarf evacuation, providing stable performance from first cut to finish.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral 1\/8\"-diameter pilot for precise alignment\u003c\/b\u003e: The built-in pilot centers each hole, delivering chatter-free countersinking and consistent depth for a professional finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting and efficient swarf evacuation\u003c\/b\u003e: The extra flute reduces chatter and speeds up material removal, giving a cleaner bevel on steel, aluminium, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank for quick setup and broad compatibility\u003c\/b\u003e: Fits standard drill chucks and minimizes runout, ensuring reliable performance in both hand tools and CNC setups.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its robust construction and precise grinding, this countersink helps you achieve repeatable bevels with fewer reworks, speeding up workflows and delivering consistent results across challenging materials. The integral pilot eliminates misalignment, while the 3-flute geometry reduces chip clogging and heat buildup for longer tool life. Whether you’re assembling cabinetry, fabricating metalwork, or finishing plastic components, you’ll enjoy reliable performance and a professional look from first cut to last.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538606670,"sku":"5825","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_c53e0345-1fd8-4e39-86db-ba4a3d29d9f3.png?v=1770028011"},{"product_id":"5810","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 100° Inclusive Angle - 1\/4 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is a precision cutting tool designed for accurate, repeatable countersinking of pre-drilled holes. With a built-in integral pilot, it centers perfectly for chatter-free cutting and a clean, flush finish every time. The 3-flute design delivers smooth cutting action, stable performance, and efficient swarf evacuation, making it suitable for steel, aluminium, and plastics in both workshops and production environments. It features a 1\/8\" pilot diameter, a 100° included angle, and a 1\/4\" body diameter to provide reliable performance across a range of hole sizes. Manufactured to high quality standards, this countersink is built for long-lasting reliability in demanding settings.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot alignment\u003c\/b\u003e: The built-in pilot guides the countersink precisely into pre-drilled holes, delivering accurate depth and concentric seating with minimal wandering for consistent results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute smooth cutting\u003c\/b\u003e: The 3-flute geometry reduces cutting forces, enables efficient material removal, and improves swarf evacuation to prevent clogging and chatter for a cleaner finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRugged straight shank and sizing\u003c\/b\u003e: The straight shank fits standard chucks and collets, while the 1\/4\" body diameter and 100° included angle provide rigidity and a reliable chamfer across steel, aluminium, and plastics.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUsing this countersink helps you automate and standardize your countersinking tasks, reduces rework, and improves part consistency. Its reliable performance supports faster setups, smoother workflows, and professional-looking results across a range of projects and production runs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538639438,"sku":"5810","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_bc8a990e-fd99-4cc0-8da9-15578c2d5e2e.png?v=1770028016"},{"product_id":"5817","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 100° Inclusive Angle - 5\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is a precision tool designed for accurate countersinking of pre-drilled holes. Built for both workshop and production environments, it delivers clean, professional finishes with each use.\n\u003c\/p\u003e \u003cp\u003e\nFeaturing a built-in integral pilot, a 3-flute design, and a straight shank, this countersink maintains perfect alignment, minimizes chatter, and provides smooth cutting across a range of materials. It is configured for an 1\/8\" pilot diameter, a 100° inclusive angle, and a 5\/16\" body diameter to support reliable, repeatable results on steel, aluminum, and plastics.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: Centers the countersink in pre-drilled holes, delivering consistent flush finishes and reducing chatter for repeatable results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting\u003c\/b\u003e: Provides stable cutting action, improved swarf evacuation, and cleaner holes with less vibration on a variety of materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRobust imperial geometry\u003c\/b\u003e: 1\/8\" pilot diameter, 100° included angle, and 5\/16\" body diameter on a straight shank deliver reliable performance across common countersinking tasks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink supports efficient workflows by delivering repeatable, high-quality countersinking with minimal setup and rework. Its integral pilot and durable construction help you achieve professional-looking finishes quickly, making it a dependable choice for both occasional hobby use and busy production environments.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538672206,"sku":"5817","price":29.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_221b0ccc-d5f8-449f-852f-b73bebbf96ea.png?v=1770028021"},{"product_id":"5811","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 100° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is designed for accurate, repeatable countersinking of pre-drilled holes. Its precision-ground integral pilot ensures perfect alignment with the hole, delivering chatter-free cutting and a clean, professional finish every time.\n\u003c\/p\u003e\n\u003cp\u003e\nBuilt with a 3-flute design, this countersink delivers smooth cutting action, strong stability, and efficient swarf evacuation. It performs consistently across a range of materials—including steel, aluminium, and plastics—and is manufactured to high quality standards for both workshop and production environments where precision and reliability matter.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: The precision-ground pilot centers the countersink in the drilled hole, minimizing wandering and producing a clean, flush seating with reduced vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting and evacuation\u003c\/b\u003e: The 3-flute geometry provides steady cuts, improved stability, and efficient chip clearance for faster, mess-free operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank with defined geometry for repeatable results\u003c\/b\u003e: With a 1\/8\" pilot diameter, 100° inclusive angle, and 3\/8\" body diameter, it clamps securely in standard holders for quick setup and consistent countersinking depth.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink is a dependable choice for professionals and hobbyists alike, helping you achieve precise, repeatable results with less rework and downtime. Its integral pilot and robust 3-flute design support reliable performance across common workshop materials, making it a trustworthy addition to any fabrication or production setup.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538704974,"sku":"5811","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_53762df0-b359-4baa-b947-04940a18928f.png?v=1770028025"},{"product_id":"5812","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 120° Inclusive Angle - 1\/4 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink is a precision 3-flute countersink with an integral pilot and straight shank, designed for accurate countersinking of pre-drilled holes in steel, aluminum, and plastics. Its precision-ground integral pilot ensures perfect alignment and chatter-free starts, delivering a clean, professional finish with every cut. The 3-flute design provides smooth cutting, improved stability, and efficient swarf evacuation, making it a dependable choice for both workshop and production environments where precision matters.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral 1\/8\" pilot for precise alignment\u003c\/b\u003e: The precision-ground pilot centers the countersink in the drilled hole, delivering accurate starts and a consistently clean chamfer with every cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design with 120° inclusive angle\u003c\/b\u003e: Allows fast, smooth cutting and reliable swarf evacuation across steel, aluminum, and plastics, reducing chatter and tool deflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e1\/4\" body diameter with straight shank\u003c\/b\u003e: Provides rigid seating in standard holders and machines, supporting stable depth control and long, consistent performance across jobs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you're assembling parts in a shop or completing production runs, this countersink helps you achieve repeatable results quickly. The combination of an integral pilot, robust cutting geometry, and a straight shank means fewer reworks, reduced downtime, and a professional bevel that enhances fit and appearance for every project.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538737742,"sku":"5812","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_fc650a21-5140-4871-a04f-0a00c5871ed6.png?v=1770028030"},{"product_id":"5818","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 120° Inclusive Angle - 5\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robert Charles Imperial Piloted Countersink is a precision tool designed for accurate, repeatable countersinking of pre-drilled holes. Built for both workshop tasks and production runs, this 3-flute countersink features a 1\/8\" integral pilot, a 120° included angle, and a 5\/16\" body diameter to deliver clean, professional finishes every time.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot alignment for chatter-free precision\u003c\/b\u003e: The precision-ground pilot guides the tool and aligns the countersink with the pre-drilled hole, delivering a clean, flush finish with minimal chatter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting and swarf evacuation\u003c\/b\u003e: The 3-flute geometry reduces cutting forces, improves stability, and clears chips efficiently across steel, aluminum, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRobust straight shank with defined measurements\u003c\/b\u003e: 5\/16\" body diameter and 1\/8\" pilot diameter with a 120° included angle provide consistent depth and compatibility with standard countersink setups in both workshops and production environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nBy using this countersink, you gain reliable, repeatable countersinks that reduce rework, improve hole quality, and speed up assembly workflows across materials like steel, aluminum, and plastics. The integrated pilot and 3-flute design minimize tool chatter, deliver a smooth surface finish, and help maintain consistent results whether you're in a hobbyist shop or a high-volume production environment.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538770510,"sku":"5818","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_9094475f-38ca-4f90-9ef2-e86844ad25ee.png?v=1770028035"},{"product_id":"5826","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1\/8 Pilot Diameter - 120° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flutes Integral Pilot Straight Shank is designed for accurate and consistent countersinking of pre-drilled holes. It delivers a clean, professional finish with every pass.\n\u003c\/p\u003e \u003cp\u003e\nFeaturing a precision-ground integral pilot for perfect alignment, the 3-flute design provides smooth cutting, improved stability, and efficient swarf evacuation. The tool’s geometry includes a 1\/8\" pilot diameter, 120° included angle, and a 3\/8\" body diameter, making it suitable for steel, aluminium, and plastics. Manufactured to high quality standards, this countersink is built for both workshop and production environments where precision and reliability are essential.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePrecision-aligned integral pilot\u003c\/b\u003e: Ensures perfect alignment with the pre-drilled hole, delivering chatter-free cutting and a clean finish every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute smooth cutting and swarf evacuation\u003c\/b\u003e: The 3-flute design provides smooth cutting action, improved stability, and efficient swarf removal for consistent results across materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSturdy straight shank with defined geometry\u003c\/b\u003e: 1\/8\" pilot diameter, 120° included angle, and 3\/8\" body diameter deliver reliable performance across common hole sizes and materials in both workshop and production settings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nWith this countersink, you gain a dependable finishing tool that speeds setup, reduces rework, and ensures uniform countersink depth and angle every time. Built to withstand daily workshop and production use, it offers long tool life and consistent results you can trust for repeatable assemblies and high-quality finishes.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538803278,"sku":"5826","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_d7504238-b008-4ac6-9a06-8f62d2d15b1d.png?v=1770028039"},{"product_id":"5820","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -5\/32 Pilot Diameter - 90° Inclusive Angle - 5\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is a precision tool designed for accurate countersinking of pre-drilled holes. Ideal for workshops, fabrication shops, and DIY projects, it delivers a clean, professional finish with consistent depth and alignment. Featuring a 5\/32\" pilot diameter, a 90° inclusive angle, and a 5\/16\" body diameter, the countersink centers itself on the hole and provides chatter-free cutting across a range of materials.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for exact alignment\u003c\/b\u003e: The precision-ground pilot guides the cutter precisely into the bore, ensuring consistent countersink depth and a flush, professional seating every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting\u003c\/b\u003e: Delivers smooth action, improved stability, and efficient swarf evacuation, enabling cleaner holes in steel, aluminium, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank with defined dimensions\u003c\/b\u003e: 5\/16\" body diameter and 5\/32\" pilot diameter, combined with a 90° included angle, provide reliable performance in both hand-held and production environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink is built for reliable, repeatable results in both the workshop and production settings. Its combination of an integral pilot, multi-flute cutting, and robust sizing helps you achieve consistent, high-quality finishes with reduced rework, across a variety of common materials.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538836046,"sku":"5820","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_4f51ab43-0a09-4605-8ad6-5b85e65666f0.png?v=1770028044"},{"product_id":"5827","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -5\/32 Pilot Diameter - 90° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink – 3 Flutes Integral Pilot Straight Shank is designed for accurate and consistent countersinking of pre-drilled holes. Featuring a precision ground integral pilot, it ensures perfect alignment and chatter-free cutting, delivering a clean, professional finish every time. The 3-flute design provides smooth cutting action, improved stability, and efficient swarf evacuation, making it ideal for use on a range of materials including steel, aluminium, and plastics.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot with 5\/32 in. diameter\u003c\/b\u003e: The precision-ground integral pilot centers the countersink in the pre-drilled hole, reducing wandering and chatter for consistent depth and a flush, professional finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting and efficient swarf evacuation\u003c\/b\u003e: The 3-cutting edges reduce vibration, deliver a cleaner surface, and remove material quickly, helping you finish parts faster with fewer passes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e90° included angle and 3\/8 in. body diameter with straight shank\u003c\/b\u003e: The 90° countersink angle matches standard fastener heads, while the robust 3\/8 in. body diameter and straight shank provide rigidity and secure mounting in common toolholders for reliable, repeatable results.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis countersink is built for reliability in both workshop and production settings. By combining a precise integral pilot, a stable 3-flute geometry, and a durable straight-shank design, it helps you achieve consistent flush seating, reduces rework, and supports efficient, high-quality assemblies across steel, aluminium, and plastics.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538868814,"sku":"5827","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_85a77677-4a7e-420d-a036-486d407c919b.png?v=1770028048"},{"product_id":"5821","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -5\/32 Pilot Diameter - 100° Inclusive Angle - 5\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is designed for accurate, repeatable countersinking of pre-drilled holes. With a precision-ground integral pilot for perfect alignment and chatter-free cutting, it delivers a clean, professional finish across steel, aluminium, and plastics. The tool is built for both workshop and production environments and uses sizes that align with standard hole and fastener requirements: 5\/32\" pilot diameter, 100° included angle, and 5\/16\" body diameter.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: The precision-ground integral pilot centers the countersink in pre-drilled holes, delivering accurate starts, reduced wandering, and chatter-free cutting for a cleaner finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute, smooth-cut design\u003c\/b\u003e: The 3-flute geometry provides stable cutting action, improved swarf evacuation, and consistent chip removal for fast, reliable countersinks in steel, aluminium, and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRugged, production-ready build with defined geometry\u003c\/b\u003e: With a 5\/32\" pilot, 100° included angle, and 5\/16\" body diameter, this countersink delivers consistent depth and flush seating, minimizing rework and boosting productivity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBy choosing this countersink, you gain faster setup times, fewer defects, and a more professional look across assemblies. The integral pilot keeps holes true, the triple-flute design maintains smooth cutting, and the tool's durable construction stands up to busy workshop and production environments, helping your workflow stay on schedule and your results stay consistent.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538901582,"sku":"5821","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_13e142c5-0d80-4076-8881-b2695b65482a.png?v=1770028053"},{"product_id":"5823","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -5\/32 Pilot Diameter - 100° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nIntroducing the Robet Charles Imperial Piloted Countersink with a 3‑flute, integral pilot and straight shank. This tool is built for precise, repeatable countersinking in pre‑drilled holes, helping you achieve consistent chamfers with minimal chatter. The integrated pilot guides the cutter for a true start and a clean finish every time.\n\u003c\/p\u003e \u003cp\u003e\nThe 3‑flute configuration delivers a smooth cutting action, improved stability, and efficient swarf evacuation, making it suitable for use on steel, aluminium, and plastics. Manufactured to high quality standards, this countersink is well‑suited for both workshop and production environments where precision and reliability are essential.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: The precision‑ground integral pilot centers the countersink in the hole, eliminating chatter and delivering a consistent chamfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree‑flute design for smooth cutting\u003c\/b\u003e: The triple‑flute geometry reduces vibration, improves stability, and enables efficient swarf evacuation for a clean finish on metals and plastics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSturdy straight shank with defined dimensions\u003c\/b\u003e: The straight shank fits standard drill chucks for easy setup, while the 5\/32\" pilot diameter, 100° included angle, and 3\/8\" body diameter ensure reliable depth control and repeatable results.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nWith this countersink in your toolbox, you gain predictable, high‑quality chamfers across a range of materials, faster setup times, and fewer reworks due to misaligned countersinking. The integrated pilot keeps starts true, the 3‑flute design maintains stable cuts under load, and the robust geometry supports consistent results in both small shops and busy production environments. Trustworthy performance across steel, aluminium, and plastics helps streamline workflows and improve overall outcomes on every project.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538934350,"sku":"5823","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_4143ff30-4b4a-4dff-baee-af53f1944bd1.png?v=1770028057"},{"product_id":"5822","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -5\/32 Pilot Diameter - 120° Inclusive Angle - 5\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is a precision cutting tool designed to countersink pre-drilled holes with perfect alignment. Its integral pilot minimizes wandering and chatter, delivering a clean, flush finish and consistent depth every time. The combination of a 5\/32\" pilot diameter, a 120° inclusive angle, and a 5\/16\" body diameter provides reliable performance across a range of hole sizes and materials.\n\u003cbr\u003e\u003cbr\u003e\nThe 3-flute design delivers smooth cutting action, improved stability, and efficient swarf evacuation, making it suitable for steel, aluminum, and plastics. Manufactured to high standards, this countersink is built for both workshop and production environments where precision and reliability are essential.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment and chatter-free countersinking\u003c\/b\u003e: The built-in pilot keeps the countersink centered in the pre-drilled hole, delivering a clean, flush finish with consistent depth and minimal wandering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting and efficient swarf evacuation\u003c\/b\u003e: Three cutting edges reduce vibration, improve stability, and quickly clear chips for a faster, cleaner operation across a variety of materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank with 5\/16\" body diameter for stability and broad compatibility\u003c\/b\u003e: Robust construction fits standard chucks and quick-change tooling, providing reliable seating and reduced deflection during heavy cutting.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink helps you achieve repeatable, professional results, supporting faster setup, reduced rework, and better surface quality. With its integrated pilot and sturdy design, it’s a dependable choice for precise countersinking in both hand-held and machine-assisted workflows, across metal and plastic applications.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418538999886,"sku":"5822","price":28.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_34cab637-8098-46fa-b8c8-2fd0d6797e5f.png?v=1770028062"},{"product_id":"5828","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -5\/32 Pilot Diameter - 120° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink with a 3-flute integral pilot and straight shank is designed to deliver accurate and consistent countersinking for pre-drilled holes. The precision-ground integral pilot ensures perfect alignment, delivering chatter-free cutting and a clean, professional finish every time.\n\u003c\/p\u003e \u003cp\u003e\nIts 3-flute design provides smooth cutting action, enhanced stability, and efficient swarf evacuation, making it ideal for steel, aluminum, and plastics in both workshop and production settings.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral Pilot for Precise Alignment\u003c\/b\u003e: Keeps the countersink centered on the pre-drilled hole for repeatable chamfers and a clean surface finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-Flute Design for Stability and Efficient Chip Evacuation\u003c\/b\u003e: Delivers smooth cutting action with minimal chatter and quick removal of swarf for better surface quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight Shank, 5\/32\" Pilot Diameter, 120° Included Angle, 3\/8\" Body Diameter\u003c\/b\u003e: Provides rigid engagement in standard tool holders with a predictable cutting depth and broad material compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink is manufactured to high-quality standards, making it suitable for both detailed workshops and high-volume production environments where precision and reliability are essential.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418539032654,"sku":"5828","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_0f66f806-8bdf-42e5-856a-3276f8bef07b.png?v=1770028066"},{"product_id":"5830","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/16 Pilot Diameter - 90° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003eRobet Charles Imperial Piloted Countersink is a precision tool designed for accurate countersinking of pre-drilled holes. It features a straight shank and an integral pilot diameter of 3\/16 inch, helping your work stay centered with minimal wandering.\u003c\/p\u003e \u003cp\u003eSuitable for both workshop and production environments, it delivers repeatable, professional results across steel, aluminium, and plastics and is built for reliable performance under demanding use.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot (3\/16 in) for precise alignment\u003c\/b\u003e: The precision ground integral pilot ensures the countersink seats true in pre-drilled holes, delivering centered, chatter-free cutting for a clean finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute design for smooth cutting and swarf evacuation\u003c\/b\u003e: Three cutting edges provide stable performance, better finish, and efficient chip removal to reduce downtime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank with 90° included angle and 3\/8 in body diameter\u003c\/b\u003e: Built to fit standard drill chucks, this geometry produces consistent countersinks with a flush seating in a variety of materials.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its robust construction and dependable performance, this countersink helps you complete precise countersinks quickly and consistently, improving workflow and reducing rework. It's a reliable choice for professionals who require repeatable results, whether you're assembling parts in a shop or running production tasks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418539065422,"sku":"5830","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_dbbaa753-c691-43a9-bb2e-12ec92a7b436.png?v=1770028071"},{"product_id":"5831","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/16 Pilot Diameter - 100° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink – 3 Flute Integral Pilot Straight Shank is designed for accurate and consistent countersinking of pre-drilled holes. \u003cbr\u003e\u003cbr\u003eFeaturing a precision ground integral pilot, it ensures perfect alignment and chatter-free cutting, delivering a clean, professional finish every time. The 3-flute design provides smooth cutting action, improved stability, and efficient swarf evacuation, making it ideal for use on steel, aluminium, and plastics. Manufactured to high quality standards, this countersink is suitable for both workshop and production environments where precision and reliability are essential.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated precision pilot\u003c\/b\u003e: Ensures perfect alignment with pre-drilled holes, delivering chatter-free cuts and a clean finish every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3-flute cutting for stability\u003c\/b\u003e: Provides smooth cutting action, improved stability, and efficient swarf evacuation for faster setups and reduced rework.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRigid geometry for repeatable results\u003c\/b\u003e: Precisely ground with a 3\/16\" pilot and 3\/8\" body diameter and a 100° included angle to deliver consistent countersinks across jobs, reducing rework and ensuring reliable fits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink delivers reliable performance across materials and production environments, helping you speed up setup times, achieve consistent countersinks, and improve overall part quality. The integrated pilot keeps holes concentric, the three-flute geometry minimizes vibration, and the sturdy straight shank maintains tool stability in clamping setups, so you can trust it for daily use in workshops and production lines.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418539098190,"sku":"5831","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_94949d13-4e5d-4e11-876c-662405061b90.png?v=1770028075"},{"product_id":"5832","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/16 Pilot Diameter - 120° Inclusive Angle - 3\/8 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robert Charles Imperial Piloted Countersink is a precision tool designed for accurate countersinking of pre-drilled holes across a range of materials. With a precision-ground integral pilot, it aligns perfectly with the hole center for a chatter-free cut and a clean, professional finish every time. The 3-flute design delivers smooth cutting action, enhanced stability, and efficient swarf evacuation, making it ideal for both workshop tasks and production workflows involving steel, aluminium, and plastics.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegrated precision pilot for perfect alignment\u003c\/b\u003e: starts true in each hole, minimizes wandering, and delivers a uniform countersink depth for consistent seating of fasteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for smooth cutting and efficient swarf evacuation\u003c\/b\u003e: reduces vibration, lowers heat in the cut, and speeds material removal for a quick, reliable finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRigid straight shank with specified geometry (3\/16\" pilot, 120° included angle, 3\/8\" body diameter)\u003c\/b\u003e: compatible with standard holders and tooling setups, providing stable performance and repeatable results across multiple applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nDesigned for reliability in both dedicated workshops and high-demand production environments, this countersink helps you achieve precise, repeatable results with less rework. Its robust construction and thoughtful geometry support long tool life and dependable performance, so you can focus on getting the job done efficiently and to specification.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418539130958,"sku":"5832","price":30.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_5214dc9c-fa68-4c73-ac8d-4a85016d1888.png?v=1770028079"},{"product_id":"5834","title":"Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -3\/16 Pilot Diameter - 120° Inclusive Angle - 7\/16 Body Diameter","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robet Charles Imperial Piloted Countersink is a precision tool designed for accurate and consistent countersinking of pre-drilled holes. Featuring a precision-ground integral pilot and a 3-flute design, it delivers aligned, chatter-free cutting and a clean, professional finish on steel, aluminium, and plastics. The straight shank ensures easy fit in standard tool holders, making it suitable for both workshop tasks and high-volume production.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for precise alignment\u003c\/b\u003e: The precision-ground integral pilot ensures perfect hole alignment and chatter-free cutting, delivering consistent countersink depth every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute design for stability and swarf evacuation\u003c\/b\u003e: The 3-flute geometry provides a smoother cut, better swarf evacuation, and improved stability across a range of materials, reducing vibration and finishing errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStraight shank with defined geometry\u003c\/b\u003e: Designed for easy setup and reliable seating in standard tooling holders; accommodates a 3\/16 in pilot diameter, 120° inclusive angle, and a 7\/16 in body diameter for precise countersinks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink enables repeatable, professional results with fewer adjustments, helping you speed up production and reduce rework. The integrated pilot and robust cutting geometry work together to deliver clean finishes, minimize deburring, and improve overall workflow from first setup to final pass.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418539163726,"sku":"5834","price":33.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Piloted_Countersink_24d10eb0-4827-4c93-a664-887168363d98.png?v=1770028085"}],"url":"https:\/\/www.protool-ltd.co.uk\/collections\/robert-charles-countersinks.oembed?page=7","provider":"Protool Precision Tools","version":"1.0","type":"link"}