{"product_id":"570-10-close-fit","title":"Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - #10 Cap Screw Size - 0.19 Pilot Size","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robert Charles Plain Shank Counterbore is a high‑performance cutting tool built for precision counterboring in metalworking. Designed for engineers, machinists, and workshop environments, it delivers clean, accurate holes with enduring durability, even under demanding cutting conditions.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial and grade\u003c\/b\u003e: M35 HSS‑E with 5% cobalt for enhanced heat resistance, wear life, and cutting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePlain shank design\u003c\/b\u003e: Simple, robust shank that fits standard tool holders for stable, reliable machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePilot size\u003c\/b\u003e: 0.19 in pilot diameter provides precise starting guidance and consistent bore alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCap screw compatibility\u003c\/b\u003e: Sized for #10 cap screws, ensuring proper seating and alignment in assembled assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIdeal applications\u003c\/b\u003e: Suited for precision engineering, automotive manufacturing, and general workshop counterboring tasks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith this counterbore, you’ll achieve accurate, flat-bottom counterbores that support secure fastener seating and repeatable results. The 5% cobalt alloy offers improved heat resistance and longer tool life, reducing downtime and tool changes in demanding jobs. The plain shank simplifies setup in common tool holders, helping you maintain consistent runout and surface finish across multiple parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43411727548494,"sku":"570-10-CLOSE FIT","price":37.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Counterbores_dcb17979-387c-4fa5-b985-5f773990e510.png?v=1769685288","url":"https:\/\/www.protool-ltd.co.uk\/products\/570-10-close-fit","provider":"Protool Precision Tools","version":"1.0","type":"link"}