{"product_id":"5770-4-close-fit","title":"Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - #4 Cap Screw Size - 0.112 Pilot Size","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robert Charles Plain Shank Counterbore is a durable, precision cutting tool designed for clean, accurate counterbores in metalwork. Built for engineers, machinists, and workshop professionals, it delivers reliable performance from start to finish with a cobalt-enhanced edge for tough jobs.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: M35-HSS-E with 5% cobalt for excellent heat resistance and edge retention during high-speed machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShank Style\u003c\/b\u003e: Plain shank for quick, stable fitment in standard tool holders, enabling smooth setup and repeatable results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePilot Size\u003c\/b\u003e: 0.112\" pilot to guide the countersink and help maintain accurate depth control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCap Screw Compatibility\u003c\/b\u003e: Sized for #4 cap screws, ensuring reliable seating and flush installation in common assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFinish\u003c\/b\u003e: Bright, polished body that resists wear and simplifies cleanup between jobs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn practice, this counterbore delivers square, true counters with minimal runout, reducing rework and improving fastener seating across a range of metals. The high-performance cobalt-enhanced steel holds a sharp edge longer, meaning fewer tool changes in production or repair work. The plain shank and precise 0.112\" pilot make it a dependable choice for precision engineering, automotive components, and general workshop applications where durability and consistent results matter.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43411726532686,"sku":"5770-4-CLOSE FIT","price":33.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Counterbores_8d18bb10-6787-4d98-a79a-0d3e2610926d.png?v=1769685232","url":"https:\/\/www.protool-ltd.co.uk\/products\/5770-4-close-fit","provider":"Protool Precision Tools","version":"1.0","type":"link"}