{"product_id":"value-collection-gh8815151-pilot-counterbore-15-64-in","title":"Value Collection GH8815151 Pilot Counterbore 15\/64 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION GH8815151 is a 3-flute interchangeable pilot counterbore designed for precision counterboring operations in metal fabrication and machining applications. Built from cobalt steel with a bright, uncoated finish, this tool delivers solid performance in harder ferrous and stainless materials where high-speed steel tools fall short. The straight shank measures 15\/64 inches in diameter and 3-1\/16 inches in length, with a 3-13\/16 inch overall length that fits standard drill press and milling machine setups. Right-hand cutting geometry keeps chip evacuation clean across the three flutes. Machinists and tool-and-die professionals are the primary users of this style of counterbore.\u003c\/p\u003e\u003cp\u003eThis interchangeable pilot counterbore is suited to production and job-shop environments where counterbore diameter and pilot combinations are swapped frequently. The 15\/64 inch counterbore diameter pairs with a 3\/32 inch pilot shank diameter, making it appropriate for light-duty counterboring in steel, stainless, cast iron, and similar materials. It is not designated as an aircraft-style counterbore. Typical applications include creating recessed seats for socket head cap screws and similar fasteners in precision mechanical assemblies.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e15\/64 inch counterbore diameter with 3\/32 inch pilot shank compatibility\u003c\/li\u003e\n\u003cli\u003eCobalt steel construction for improved heat and wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003e3-flute right-hand cutting geometry for efficient chip removal\u003c\/li\u003e\n\u003cli\u003eStraight shank at 15\/64 inches for secure chuck retention\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — no coating buildup at cutting edges\u003c\/li\u003e\n\u003cli\u003eInterchangeable pilot design allows flexible pilot swaps without replacing the body\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with interchangeable pilot counterbore systems accepting a 3\/32 inch pilot shank diameter and a 15\/64 inch straight shank body in standard drill press, milling machine, or lathe chuck setups.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this counterbore should be performed by qualified machinists familiar with cutting tool setup and workholding practices. Secure the straight shank fully in a properly rated drill chuck or collet before operation, and verify pilot fit before beginning the cut. Always follow the machine manufacturer speed-and-feed recommendations for cobalt tooling in the workpiece material. Power down and de-energize the machine spindle completely before changing pilots or removing the tool.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 15\/64 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 15\/64 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Shank Diameter Compatibility\u003c\/strong\u003e: 3\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 3-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-13\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAircraft Style\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: GH8815151\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51689176432946,"sku":"GH8815151","price":128.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e7ff22011ad997a88e3647a79cad397d.jpg?v=1788255631","url":"https:\/\/voomisupply.com\/products\/value-collection-gh8815151-pilot-counterbore-15-64-in","provider":"Voomi Supply","version":"1.0","type":"link"}