{"product_id":"alvord-polk-03087-solid-pilot-counterbore-hss-0-8465-in","title":"Alvord Polk 03087 Solid Pilot Counterbore Hss 0.8465 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ALVORD POLK 03087 is a solid pilot counterbore designed for precision recess cutting in metal fabrication and machining applications. It features a counterbore diameter of 0.8465 inches and a pilot diameter of 0.5709 inches, making it compatible with 0.5512-inch socket-head cap screws. The tool is manufactured from high speed steel (HSS) with a bright, uncoated finish for general-purpose cutting. The straight-cylindrical shank measures 0.625 inches in diameter and the overall length is 7.5 inches. Forward cutting direction suits standard drill press and milling machine setups. This tool is appropriate for machinists, tool and die technicians, and maintenance professionals performing counterbore operations on metal workpieces.\u003c\/p\u003e\u003cp\u003eThis counterbore is suited for creating recessed seating for socket-head cap screws in steel, aluminum, and similar machinable materials. It fits standard toolholding setups with a 0.625-inch shank and is well suited for production or maintenance environments where consistent counterbore depth and concentricity are required. The 14.00 mm fastener size compatibility (metric equivalent) broadens its usefulness across mixed-standard assemblies. Standard pilot style ensures accurate bore alignment without requiring a separate pilot pin.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCounterbore diameter of 0.8465 inches for socket-head cap screw seating\u003c\/li\u003e\n\u003cli\u003eStandard pilot diameter of 0.5709 inches for accurate bore alignment\u003c\/li\u003e\n\u003cli\u003eCompatible with 0.5512-inch (14.00 mm) socket-head cap screws\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability in general machining\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank at 0.625 inches for standard toolholder fitment\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with cutting fluids\u003c\/li\u003e\n\u003cli\u003eForward cutting direction for use on standard drill presses and mills\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 0.5512-inch and 14.00 mm socket-head cap screws. Fits toolholders and chucks accepting a 0.625-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and operation should be performed by a qualified machinist familiar with counterboring procedures. Secure the workpiece firmly before operation and ensure the tool is properly seated in the chuck or toolholder. Use appropriate cutting fluid for the material being machined to extend tool life and maintain bore quality. Always power down the machine and confirm the spindle has stopped before changing or inspecting tooling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 0.8465 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 0.5709 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Size Compatibility (Decimal Inch)\u003c\/strong\u003e: 0.5512 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Size Compatibility (Metric)\u003c\/strong\u003e: 14.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Type Compatibility\u003c\/strong\u003e: Socket-Head Cap Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.625 inches (5\/8 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: 7.5 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Forward\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Style\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: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ALVORD POLK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 03087\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALVORD POLK","offers":[{"title":"Default Title","offer_id":67910724092210,"sku":"03087","price":126.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c9868cc4b5d4428a8484937447110f7e.jpg?v=1791199918","url":"https:\/\/voomisupply.com\/products\/alvord-polk-03087-solid-pilot-counterbore-hss-0-8465-in","provider":"Voomi Supply","version":"1.0","type":"link"}