{"product_id":"value-collection-gh8860249-solid-pilot-counterbore-hss","title":"Value Collection GH8860249 Solid Pilot Counterbore Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION GH8860249 is a solid pilot counterbore designed to create clean, flat-bottomed recesses for fillister-head screws in metalworking and machining applications. The tool features a 19\/32 inch counterbore diameter paired with a 3\/8 inch standard pilot diameter that registers in a pre-drilled hole to keep the counterbore concentric. Two forward-cutting flutes clear chips efficiently during the cut. The straight-cylindrical shank measures 3\/8 inch in diameter, and the overall length is 4-3\/8 inches. The body is machined from high speed steel, giving it the heat resistance and hardness needed for repetitive use in steel, aluminum, and similar workpiece materials.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is suited for machine shops, tool rooms, and production environments where fillister-head fasteners must sit flush or recessed in a workpiece. It is compatible with standard milling machines, drill presses, and CNC machining centers that accept a 3\/8 inch straight-cylindrical shank. The 2-flute geometry keeps cutting forces manageable in a wide range of materials. Machinists, tool-and-die makers, and maintenance technicians working in industrial and aerospace-adjacent environments will find this tool appropriate for precision recess work where concentricity and flat-bottom finish matter.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e19\/32 inch counterbore diameter sized for fillister-head screw recesses\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch standard pilot registers in the pilot hole for concentric cutting\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides hardness and heat resistance for steel and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003e2-flute forward-cutting geometry for controlled chip evacuation\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch straight-cylindrical shank fits standard drill chucks and collets\u003c\/li\u003e\n  \u003cli\u003e4-3\/8 inch overall length provides reach for typical machining setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with fillister-head screws, compatible with machine tools accepting a 3\/8 inch straight-cylindrical shank, including drill presses and milling machines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use is performed by machinists or qualified shop technicians. Secure the shank firmly in a drill chuck or collet before operation and verify the pilot diameter matches the pre-drilled pilot hole to maintain concentricity. Power down and de-energize the machine spindle completely before changing or inspecting the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 19\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Forward\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Compatibility\u003c\/strong\u003e: Fillister-Head Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.18 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: GH8860249\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51691732599090,"sku":"GH8860249","price":67.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dab530f6cfc6191fb90fbe5d7388c0a9.jpg?v=1788288973","url":"https:\/\/voomisupply.com\/products\/value-collection-gh8860249-solid-pilot-counterbore-hss","provider":"Voomi Supply","version":"1.0","type":"link"}