{"product_id":"5845-4-0-90","title":"Robert Charles Metric Piloted Countersink - 3 Flutes - Integral Pilot - Straight Shank - 4.0mm Pilot Diameter - 90° Inclusive Angle","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robert Charles Metric Piloted Countersink – 3 Flutes – Integral Pilot – Straight Shank is engineered for precise, repeatable countersinking of metric pre-drilled holes. Built for workshop, maintenance, and production machining, it delivers clean, concentric results with minimal chatter.\u003c\/p\u003e\n\u003cp\u003eIts integral pilot keeps the cutter aligned during the cut, preventing wander and ensuring consistent seating. The 3-flute geometry provides smooth cutting, strong stability, and efficient chip evacuation across steels, aluminium, and plastics.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIntegral pilot for accurate alignment\u003c\/b\u003e: Keeps the countersink centered in the hole, prevents wandering, and delivers concentric seating with every pass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3‑flute cutting geometry for smooth cutting\u003c\/b\u003e: Provides stable cuts, reduces chatter, and promotes efficient chip evacuation for a cleaner finished hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMetric-ready with 4.0 mm pilot diameter and 90° included angle\u003c\/b\u003e: Matches metric pre-drilled holes for flush seating and reliable fastener performance across a range of materials.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its piloted design and robust geometry, this countersink helps you reduce rework, speed up setups, and achieve a professional-looking finish in every project. It supports a broad range of materials, enabling reliable, repeatable results for both production runs and on-demand maintenance, ultimately improving workflow and overall performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418544963662,"sku":"5845-4.0-90","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_e128f804-ecef-410b-9f74-5cffc3396bc6.png?v=1770028170","url":"https:\/\/www.protool-ltd.co.uk\/products\/5845-4-0-90","provider":"Protool Precision Tools","version":"1.0","type":"link"}