{"product_id":"value-collection-gh8792160-counterbore-2-25in-5-flute-hss","title":"Value Collection GH8792160 Counterbore 2.25in 5 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION GH8792160 is a 5-flute interchangeable pilot counterbore designed for precision enlarging and finishing of pre-drilled holes to accept fastener heads, dowels, or mating hardware. Constructed from high speed steel with a bright, uncoated polished finish, this tool delivers consistent cutting performance in production and maintenance machining environments. The straight shank measures 1.75 inches in diameter and 7.375 inches in length, giving the tool a rigid setup in compatible toolholders. Overall length is 9.875 inches. The interchangeable pilot design accepts a 0.5-inch pilot shank diameter, allowing the counterbore diameter to be matched to the pilot without replacing the full tool body.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is suited for use in vertical mills, drill presses, and machining centers where socket-head cap screws or similar fasteners require a recessed seat. It is intended for right-hand cutting and is appropriate for general metalworking applications in job shops, maintenance facilities, and manufacturing operations. The 5-flute geometry supports smoother surface finish at the counterbore floor compared to fewer-flute designs, making it a practical choice where fastener seating quality matters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2.25-inch counterbore diameter with 5-flute right-hand cutting geometry\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction for durability across a range of ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eInterchangeable pilot accepts a 0.5-inch pilot shank diameter for flexible setup\u003c\/li\u003e\n  \u003cli\u003eStraight shank at 1.75 inches diameter for secure seating in standard toolholders\u003c\/li\u003e\n  \u003cli\u003eBright, polished uncoated finish — no coating buildup that could affect dimensional tolerance\u003c\/li\u003e\n  \u003cli\u003e9.875-inch overall length with a 7.375-inch shank length for extended reach applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use counterbore for machining setups requiring a 2.25-inch counterbore diameter with a 0.5-inch interchangeable pilot shank and a 1.75-inch straight shank interface.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist familiar with rotating cutting tools and manual or CNC machine operation. Secure the straight shank firmly in a collet, end mill holder, or drill chuck rated for the shank diameter before operation. Ensure the pilot is properly seated and locked before engaging the workpiece. Always power down and lock out the machine spindle before changing the pilot or removing the tool from the holder.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 2.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 7.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 9.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Shank Diameter Compatibility\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright, Uncoated, Polished\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: GH8792160\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51715660415282,"sku":"GH8792160","price":901.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8373f0fd7dbb88579b3c71d4c2522b3c_dbc53b87-d54c-4ef0-8b82-8e56d5a2597b.jpg?v=1788516908","url":"https:\/\/voomisupply.com\/products\/value-collection-gh8792160-counterbore-2-25in-5-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}