{"product_id":"keo-919-000-278-countersink-3-4-in-82-degree-cobalt-3-flute","title":"Keo 919-000-278 Countersink 3\/4 in 82 Degree Cobalt 3 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KEO 919-000-278 is a single-end cobalt steel countersink designed for producing clean, accurate chamfers and seat angles in ferrous and hard materials. The tool features a 3\/4 inch head diameter, an 82-degree included angle, and 3 flutes for efficient chip evacuation and smooth cutting action. The straight-cylindrical shank measures 3\/8 inch in diameter and is compatible with standard drill chucks and collet holders. At 1.5 inches overall length and weighing 0.17 pounds, this is a compact, rigid tool suited to production and maintenance environments where consistent countersink geometry is required.\u003c\/p\u003e\n\u003cp\u003eThis countersink is appropriate for metalworking applications in machine shops, maintenance facilities, and industrial production settings. The 82-degree included angle matches the standard flathead machine screw seating angle commonly specified in aerospace and general-purpose fastener work. The cobalt steel construction makes it suitable for cutting stainless steel, alloy steels, and other work-hardening materials where high-speed steel tooling falls short. Licensed machinists and tool-and-die professionals are the primary installers and operators of this tool.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree included angle matches standard flathead machine screw geometry\u003c\/li\u003e\n  \u003cli\u003eCobalt steel construction for improved heat and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003e3 flutes for smooth cutting action and efficient chip removal\u003c\/li\u003e\n  \u003cli\u003e3\/4 inch head diameter with 3\/8 inch straight-cylindrical shank\u003c\/li\u003e\n  \u003cli\u003eSingle-end design with shank attachment method for straightforward chuck mounting\u003c\/li\u003e\n  \u003cli\u003eCompact 1.5 inch overall length for use in tight setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard drill chucks and collet holders accepting a 3\/8 inch straight-cylindrical shank, suitable for bench drill presses, CNC machining centers, and hand-held drill motors used in metalworking applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is operated by machinists and maintenance technicians using standard drilling equipment. Secure the shank fully in the chuck or collet before operation and confirm the workpiece is clamped to prevent movement. Use appropriate cutting fluid for the material being machined, particularly when working with stainless or alloy steels. Inspect the cutting edges for wear before each use and replace the tool if chipping or dullness is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.75 inches (19.05 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 82 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Cutting Diameter\u003c\/strong\u003e: 0.75 inches (19.05 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches (9.65 mm)\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: 1.5 inches (64 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountersink Material\u003c\/strong\u003e: Cobalt Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.17 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112812\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: 919-000-278\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KEO","offers":[{"title":"Default Title","offer_id":51972217012530,"sku":"919-000-278","price":48.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5a78bc5eaf6be3dc8e824ac8b464dd39.jpg?v=1789964676","url":"https:\/\/voomisupply.com\/products\/keo-919-000-278-countersink-3-4-in-82-degree-cobalt-3-flute","provider":"Voomi Supply","version":"1.0","type":"link"}