{"product_id":"value-collection-gh8860025-solid-pilot-counterbore-hss","title":"Value Collection GH8860025 Solid Pilot Counterbore Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION GH8860025 is a solid pilot counterbore designed to create accurate, flat-bottomed recesses for fillister-head screws in metalworking and machining applications. Built from high speed steel, this tool delivers consistent cutting performance across a range of workpiece materials. The counterbore diameter measures 0.155 inches, with a standard pilot diameter of 0.085 inches that keeps the tool centered in the existing pilot hole. The straight cylindrical shank measures 3\/16 inches (0.1875 inches) in diameter and fits standard drill chucks and collet holders. With 2 flutes and a forward cutting direction, the tool produces clean, uniform seats. Overall length is 2.5 inches. Installed by machinists and tool-and-die technicians on manual or CNC machines.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is sized for Number 2 fillister-head screws and suits precision assembly work where a flush or recessed screw head is required. Typical applications include fixture building, machine component assembly, and production machining where consistent recess depth and diameter are critical. The standard pilot style is appropriate for use in pre-drilled through-holes or blind holes where a pilot is present to guide the tool.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCounterbore diameter of 0.155 inches for Number 2 fillister-head screws\u003c\/li\u003e\n  \u003cli\u003eStandard pilot diameter of 0.085 inches for accurate tool alignment\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction for durability across common workpiece materials\u003c\/li\u003e\n  \u003cli\u003e2-flute design for smooth, forward-cutting material removal\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 0.1875 inches for broad chuck and collet compatibility\u003c\/li\u003e\n  \u003cli\u003eCompact 2.5-inch overall length suited to bench mills and drill presses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Number 2 fillister-head screws. Fits standard drill chucks and collet holders accepting a 3\/16-inch straight shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed and operated by machinists on drill presses, manual mills, or CNC machining centers. Secure the straight shank firmly in a drill chuck or collet before operation and verify runout before cutting. Power down or de-energize the machine spindle completely before changing tooling. Always use appropriate cutting fluid and workholding to prevent tool deflection and maintain recess quality.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 0.155 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 0.085 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1875 inches (3\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\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, Number 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 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: GH8860025\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709491478834,"sku":"GH8860025","price":24.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/acda5d64826a8b79fc45c65d8bad19c0.jpg?v=1788457118","url":"https:\/\/voomisupply.com\/products\/value-collection-gh8860025-solid-pilot-counterbore-hss","provider":"Voomi Supply","version":"1.0","type":"link"}