{"product_id":"5770-7-16-1-64-over","title":"Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - 7\/16 Cap Screw Size - 0.452 Pilot Size","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robert Charles Plain Shank Counterbore is a high-performance cutting tool designed for clean, precise counterbores in metal parts. Built for precision engineering, automotive applications, and everyday workshop use, it delivers durable performance with every pass.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: M35-HSS-E with 5% cobalt for enhanced heat resistance and extended wear life, maintaining sharpness under demanding cutting conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePlain Shank\u003c\/b\u003e: Easy fitment in standard tool holders, enabling quick changes and stable, chatter-free machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePilot Size\u003c\/b\u003e: 0.452\" pilot ensures accurate alignment and consistent counterbore depth across multiple workpieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCap Screw Size\u003c\/b\u003e: Designed for 7\/16\" cap screw applications, providing secure clamping in the setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCutting Geometry\u003c\/b\u003e: Precision-ground edges yield clean, square counterbores with minimal burrs and excellent surface finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApplications\u003c\/b\u003e: Ideal for precision components, automotive housings, and general fabrication where durability and repeatable results matter.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith this counterbore, you gain repeatable depth control, faster setup times, and longer tool life in tough materials. The cobalt-enhanced high-speed steel maintains a sharp edge at higher temperatures, reducing rework and delivering smooth counterbored faces. Its plain shank fits a wide range of tool holders, making it a dependable choice for production runs and one-off projects alike.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43411728531534,"sku":"5770-7\/16-1\/64 OVER","price":85.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Counterbores_0472c1b0-49e6-472e-b31e-0f598f4de832.png?v=1769685349","url":"https:\/\/www.protool-ltd.co.uk\/products\/5770-7-16-1-64-over","provider":"Protool Precision Tools","version":"1.0","type":"link"}