{"product_id":"value-collection-gh8781247-counterbore-1-3-8-in-5-flute","title":"Value Collection GH8781247 Counterbore 1-3\/8 in 5 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION GH8781247 is a 5-flute interchangeable pilot counterbore designed for precision counterboring operations in metalworking and machining environments. Built from high-speed steel with a bright, uncoated polished finish, this tool delivers clean, accurate seat geometry around pre-drilled holes. The 3MT Morse taper shank provides a secure, self-holding fit in compatible spindles and drill press quills. At 6.625 inches overall length and 1.375 inches cutting diameter, it handles medium-duty counterboring tasks with consistent results. The interchangeable pilot design allows different pilot sizes to be swapped without replacing the body, adding flexibility for varied work.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is suited for machine shops, maintenance facilities, and production environments where bolt-head or fastener seating is required. The right-hand cutting direction is standard for conventional spindle rotation. The 3MT shank fits a wide range of drill presses, knee mills, and similar machines equipped with Morse taper spindles. It is appropriate for ferrous and non-ferrous stock where high-speed steel tooling meets the material hardness requirements. Machinists and tool-and-die technicians are the primary users of this tool in both job-shop and industrial production settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1.375-inch counterbore diameter for precise fastener seat sizing\u003c\/li\u003e\n  \u003cli\u003e5-flute geometry provides smooth cutting action and reduced chatter\u003c\/li\u003e\n  \u003cli\u003e3MT Morse taper shank for secure self-holding fit in compatible spindles\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction for durability across ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated polished finish — no coating to affect dimensional tolerances\u003c\/li\u003e\n  \u003cli\u003eInterchangeable pilot accepts 0.375-inch pilot shanks for flexible use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with machines equipped with a No. 3 Morse taper spindle. Compatible with 0.375-inch interchangeable pilots. Verify spindle taper designation before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist. Power down and lock out the machine before seating or removing the Morse taper shank. Clean the spindle bore and tool taper with a clean cloth before insertion to ensure full contact and prevent runout. Secure the pilot in the counterbore body before beginning the cut, and confirm correct pilot diameter for the pre-drilled hole being counterbored.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Morse Taper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Taper Designation\u003c\/strong\u003e: 3MT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Shank Diameter Compatibility\u003c\/strong\u003e: 0.375 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: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Bright \/ Uncoated, Polished\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAircraft Style\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242100\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: GH8781247\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699960774962,"sku":"GH8781247","price":196.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ebe332ec113521404b92f0613be5d198.jpg?v=1788384134","url":"https:\/\/voomisupply.com\/products\/value-collection-gh8781247-counterbore-1-3-8-in-5-flute","provider":"Voomi Supply","version":"1.0","type":"link"}