{"product_id":"sunf3-16-100-1-2","title":"Robert Charles Piloted Microstop Countersink - 3 Flute - Integral Pilot - Threaded Shank - 3\/16 Pilot Diameter - 100°","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robert Charles Piloted Microstop Countersink is a precision cutting tool designed for engineers, machinists, and technicians who need accurate countersinking with a built-in pilot. Its 3‑flute design delivers clean, repeatable countersinks and consistent hole alignment, helping you achieve high‑quality finishes with fewer passes.\n\u003c\/p\u003e\n\u003cp\u003e\nFeaturing a threaded shank for secure fitment and compatibility with microstop cages, this countersink provides reliable depth control in demanding applications. It uses a 3\/16 inch pilot diameter and a 100° countersink angle, with the pilot diameter held to tight tolerances of −0.0005\" to −0.0015\", making it ideal for aerospace, automotive, and precision engineering work.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e3-Flute Cutting Design with 100° Countersink\u003c\/b\u003e: Delivers clean, consistent countersinks with smooth margins and reliable edge finishes, improving surface quality and repeatability across materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral 3\/16 inch Pilot Diameter with Tight Tolerances\u003c\/b\u003e: Built-in pilot centers the countersink on the hole, delivering precise alignment; the pilot diameter is held to −0.0005\" to −0.0015\" for repeatable results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThreaded Shank for Secure Fitment and Microstop Cage Compatibility\u003c\/b\u003e: Provides a secure mount in tools and, when paired with microstop cages, enables reliable depth control and repeatable countersink depths.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nThis countersink supports accurate hole preparation, reduces rework, and enhances consistency across assemblies. Its robust construction and precise tolerances give you confidence in high‑stakes aerospace, automotive, and precision‑engineering projects.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418546896974,"sku":"SUNF3\/16-100-1\/2","price":33.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Piloted_Microstop_Countersinks_fccac3e3-5e43-4a10-ad8c-a55d7e1d461a.png?v=1770028382","url":"https:\/\/www.protool-ltd.co.uk\/products\/sunf3-16-100-1-2","provider":"Protool Precision Tools","version":"1.0","type":"link"}