{"product_id":"value-collection-gh8790370-counterbore-37-64-in-3-flute-hss","title":"Value Collection GH8790370 Counterbore 37\/64 in 3 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION GH8790370 is a 3-flute interchangeable pilot counterbore designed for precision counterboring operations in metal fabrication and machining applications. Built from high speed steel with a bright, uncoated finish, this tool delivers reliable cutting performance in production and maintenance environments. It features a 37\/64 inch counterbore diameter and a 1\/2 inch straight shank for secure tool holder engagement. With a 5-1\/8 inch overall length and right-hand cutting direction, the GH8790370 is a standard-geometry tool suited for machinists and toolroom professionals working on ferrous and non-ferrous materials.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is used in drilling and boring operations where a flat-bottomed recess is required for socket head cap screws, bolts, or similar fasteners. The interchangeable pilot design accepts a 3\/16 inch pilot shank, allowing the cutting head to be swapped or replaced independently of the shank body. Typical applications include fixture building, plate work, and general metalworking in both job shop and maintenance-repair-operations settings. Licensed machinists and toolroom technicians are the primary installers and operators of this tooling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e37\/64 inch counterbore diameter for accurate flat-bottom recessing\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction for durability across ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003e3 flutes for efficient chip evacuation and smooth cutting action\u003c\/li\u003e\n  \u003cli\u003eInterchangeable pilot accepts 3\/16 inch pilot shank diameter\u003c\/li\u003e\n  \u003cli\u003e1\/2 inch straight shank for compatibility with standard chucks and tool holders\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish suitable for general-purpose machining\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard tooling option for use in drill presses, milling machines, and CNC machining centers equipped with 1\/2 inch straight-shank tool holders and requiring a 3\/16 inch interchangeable pilot.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by qualified machinists familiar with rotary cutting tool safety. Ensure the machine spindle is fully powered down and locked out before mounting or changing the counterbore or pilot. Secure the straight shank firmly in the chuck or collet to the full recommended engagement depth to prevent tool pullout during cutting. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed selection.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 37\/64 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inches\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: 3-7\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5-1\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Shank Diameter Compatibility\u003c\/strong\u003e: 3\/16 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  \u003cli\u003e\n\u003cstrong\u003eAircraft Style\u003c\/strong\u003e: No\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: GH8790370\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51711763087666,"sku":"GH8790370","price":119.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/13307959856d527a2410e58482ca1c4a.jpg?v=1788479332","url":"https:\/\/voomisupply.com\/products\/value-collection-gh8790370-counterbore-37-64-in-3-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}