{"product_id":"alvord-polk-33009-solid-pilot-counterbore-0-272-in","title":"Alvord Polk 33009 Solid Pilot Counterbore 0.272 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ALVORD POLK 33009 is a solid pilot counterbore designed for precise counterboring operations on materials fastened with 8-32 Fillister-Head screws. It features a 0.272-inch counterbore diameter, a 0.164-inch standard pilot diameter, and a straight-cylindrical 1\/4-inch shank for secure tool holder engagement. The 5-inch overall length provides reach in deeper setups. A TiN (titanium nitride) coating improves surface hardness and wear resistance, extending tool life in production and maintenance environments. This tool is installed and used by machinists, maintenance mechanics, and metalworking tradespeople performing precision drilling and fastener-seat preparation on metal workpieces.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is sized specifically for 8-32 Fillister-Head screw applications, making it a direct-fit tool for counterboring screw seats in light to medium metalworking tasks. It is suited for manual drill press work, CNC setups, and bench drilling operations in job shops, maintenance facilities, and light manufacturing environments. The standard pilot configuration ensures proper concentricity between the pilot hole and the counterbore seat without requiring an oversize pilot bore.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.272-inch counterbore diameter sized for 8-32 Fillister-Head screws\u003c\/li\u003e\n  \u003cli\u003e0.164-inch standard pilot diameter for accurate seat concentricity\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical 1\/4-inch shank fits standard drill chucks and tool holders\u003c\/li\u003e\n  \u003cli\u003e5-inch overall length provides reach for deeper counterboring setups\u003c\/li\u003e\n  \u003cli\u003eTiN coating increases surface hardness and extends cutting tool life\u003c\/li\u003e\n  \u003cli\u003eForward cutting direction for standard drill press and CNC spindle use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 8-32 Fillister-Head screws. Fits standard drill chucks and tool holders accepting a 1\/4-inch straight-cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is used by machinists and maintenance mechanics in drill press, hand drill, or CNC milling applications. Secure the workpiece firmly before operation and ensure the pilot hole is properly sized before engaging the counterbore. Follow standard shop safety practices including eye protection and appropriate spindle speeds for the workpiece material. Do not exceed the tool manufacturer's recommended RPM range for the material being cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 0.272 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 0.164 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches (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: 5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Compatibility\u003c\/strong\u003e: 8-32 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\u003eCutting Direction\u003c\/strong\u003e: Forward\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\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: 0.5 pounds\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: ALVORD POLK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 33009\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALVORD POLK","offers":[{"title":"Default Title","offer_id":67906015920434,"sku":"33009","price":70.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/56ada25021e9869f40ce45c238197b0e.jpg?v=1791162698","url":"https:\/\/voomisupply.com\/products\/alvord-polk-33009-solid-pilot-counterbore-0-272-in","provider":"Voomi Supply","version":"1.0","type":"link"}