{"product_id":"5770-8-close-fit","title":"Robert Charles Plain Shank Counterbore M35-HSS-E 5% Cobalt - #8 Cap Screw Size - 0.164 Pilot Size","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robert Charles Plain Shank Counterbore is a high-performance cutting tool designed for precision counterboring in metalworking. Built for machinists, engineers, and automotive technicians who demand clean, accurate pockets for cap screws.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: M35-HSS-E with 5% cobalt for excellent heat resistance, wear life, and cutting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShank Type\u003c\/b\u003e: Plain shank for easy fitment in standard tool holders, delivering stable, reliable machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCounterbore Size\u003c\/b\u003e: Compatible with #8 cap screws, enabling precise pocket dimensions for fast assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePilot Size\u003c\/b\u003e: 0.164 inch pilot to locate and guide the counterbore for consistent depth and alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConstruction Advantage\u003c\/b\u003e: Optimized geometry and robust metallurgy designed to withstand repeated counterboring in challenging materials.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nDesigned for precision engineering, automotive work, and general workshop use, this counterbore delivers durable performance and dependable results. The durable M35-HSS-E cobalt alloy minimizes wear during high-rotation, high-pressure counterboring, helping maintain tight tolerances and clean edges across jobs.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43411727384654,"sku":"5770-8-CLOSE FIT","price":35.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/Robert_Charles_Counterbores_3063f636-75d3-4c35-adad-d5d1641220a1.png?v=1769685274","url":"https:\/\/www.protool-ltd.co.uk\/products\/5770-8-close-fit","provider":"Protool Precision Tools","version":"1.0","type":"link"}