{"product_id":"keo-902-000-056-solid-pilot-counterbore-11mm-3-flutes","title":"Keo 902-000-056 Solid Pilot Counterbore 11mm 3 Flutes","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KEO 902-000-056 is a solid pilot counterbore designed to produce clean, flat-bottomed counterbore seats for socket-head cap screws in metalworking and machining applications. Built from cobalt steel with a bright, uncoated finish, it delivers strong wear resistance and heat tolerance during cutting. The tool features a 11 mm counterbore diameter, a 6.4 mm pilot diameter for precise hole alignment, and 3 flutes for efficient chip evacuation. With an 8 mm shank diameter and an overall length of 80 mm, it fits standard drill press and milling machine setups used by machinists and toolroom professionals.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is suited for creating recessed seating for 6 mm socket-head cap screws in ferrous metals, alloy steels, and other materials where cobalt steel tooling is appropriate. It is used in production machining, maintenance and repair operations, and toolroom work where accurate counterbore depth and concentricity are required. The standard pilot ensures proper alignment with a pre-drilled clearance hole, making it a reliable choice for repetitive fastener seating operations on manual mills, drill presses, and CNC equipment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e11 mm counterbore diameter seats 6 mm socket-head cap screws flush or below workpiece surface\u003c\/li\u003e\n  \u003cli\u003e6.4 mm standard pilot diameter aligns tool concentrically with pre-drilled clearance hole\u003c\/li\u003e\n  \u003cli\u003e3-flute geometry promotes efficient chip removal and smooth cutting action\u003c\/li\u003e\n  \u003cli\u003eCobalt steel construction provides elevated heat and wear resistance compared to standard high-speed steel\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish for straightforward resharpening in the field\u003c\/li\u003e\n  \u003cli\u003e8 mm shank diameter fits common drill chuck and collet setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 6 mm socket-head cap screws. Compatible with standard pilot counterbore applications requiring an 11 mm counterbore diameter and a 6.4 mm pilot. Fastener type compatibility is socket-head cap screw per manufacturer specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of this counterbore is performed by machinists using a drill press, manual milling machine, or CNC machining center. Always ensure the workpiece is securely clamped and the spindle speed is appropriate for the material being cut and the tool diameter before beginning operation. The pilot must engage a pre-drilled clearance hole that matches the pilot diameter to maintain concentricity. Inspect the pilot for wear or damage before each use, and avoid forcing the tool into the workpiece to prevent pilot breakage or chatter.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 11 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 6.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 80 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\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\u003eFastener Size Compatibility\u003c\/strong\u003e: 6 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241603\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: KEO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 902-000-056\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KEO","offers":[{"title":"Default Title","offer_id":51971371499826,"sku":"902-000-056","price":79.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/557fc370966e7ba38fa46eb9173b659f.jpg?v=1789956055","url":"https:\/\/voomisupply.com\/products\/keo-902-000-056-solid-pilot-counterbore-11mm-3-flutes","provider":"Voomi Supply","version":"1.0","type":"link"}