{"product_id":"value-collection-gh8860165-solid-pilot-counterbore-hss","title":"Value Collection GH8860165 Solid Pilot Counterbore Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION GH8860165 is a solid pilot counterbore designed for precision recessing of fillister-head screws in metal fabrication and machining applications. Built from high speed steel, this tool delivers reliable cutting performance in ferrous and non-ferrous materials. It features a 13\/32-inch counterbore diameter, a 1\/4-inch standard pilot diameter, and two flutes for efficient chip evacuation. The straight-cylindrical shank measures 1\/4 inch in diameter and seats securely in drill press chucks and milling machine spindles. With an overall length of 3-5\/8 inches, the tool provides adequate reach for most standard fixturing setups. Machinists and tool-and-die technicians are the primary users of this counterbore in production and job-shop environments.\u003c\/p\u003e\u003cp\u003eThis counterbore is suited for creating clean, accurately sized seats for fillister-head screws in a range of workpiece materials. It is appropriate for use on drill presses, milling machines, and similar spindle-driven equipment where controlled depth and concentricity are required. The forward cutting direction and two-flute geometry make it a practical choice for moderate-volume production work and one-off fixturing tasks alike. No aircraft-style geometry is incorporated, making this a straightforward general-purpose counterbore for standard machining operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e13\/32-inch counterbore diameter sized for fillister-head screw seating\u003c\/li\u003e\n\u003cli\u003e1\/4-inch standard pilot diameter maintains concentricity with the pilot hole\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability across ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003eTwo-flute design promotes efficient chip removal during forward cutting\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical 1\/4-inch shank compatible with standard drill press and milling chucks\u003c\/li\u003e\n\u003cli\u003e3-5\/8-inch overall length provides adequate reach for typical workpiece setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with fillister-head screws requiring a 13\/32-inch counterbore seat. Fits standard drill press and milling machine chucks accepting a 1\/4-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis counterbore should be installed by a qualified machinist familiar with spindle tooling and proper work-holding practices. Secure the workpiece firmly before engaging the cutter, and set spindle speed appropriate for the workpiece material and tool diameter. Verify pilot hole diameter matches the 1\/4-inch pilot before beginning the counterbore operation to ensure concentricity. Do not exceed the tool's rated cutting capability by forcing feed rate or using it in a handheld drill.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 13\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-5\/8 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\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Compatibility\u003c\/strong\u003e: Fillister-Head Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAircraft Style\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\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: GH8860165\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51719305855282,"sku":"GH8860165","price":53.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dfbbbc96cd8fd6a67a5dbf10d59cb902.jpg?v=1788558734","url":"https:\/\/voomisupply.com\/products\/value-collection-gh8860165-solid-pilot-counterbore-hss","provider":"Voomi Supply","version":"1.0","type":"link"}