{"product_id":"keo-919-000-371-countersink-1-8-in-90-degree-6-flute-hss","title":"Keo 919-000-371 Countersink 1\/8 in 90 Degree 6 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KEO 919-000-371 is a single-end, 6-flute countersink designed for right-hand cutting in metalworking and fabrication applications. Built from high-speed steel, it produces clean, chamfered entries for fastener seating in a wide range of workpiece materials. The tool features a 1\/8-inch head diameter, a 90-degree included angle (45-degree centerline angle), and a straight-cylindrical shank measuring 1\/8 inch in diameter and 1 inch in length. Machinists, tool and die technicians, and maintenance mechanics install this countersink in drill presses, lathes, or hand-held power tools to prep holes prior to fastener installation.\u003c\/p\u003e\u003cp\u003eThis countersink is suited for light-duty countersinking operations where precision chamfering at a standard 90-degree angle is required. Its compact 1\/8-inch head diameter makes it appropriate for small-diameter hole preparation in sheet metal, aluminum, steel, and similar materials. The straight-cylindrical shank allows straightforward chucking in standard drill chucks or collet holders without additional adapters. It does not include a pilot and is intended for use as a standalone countersinking tool without pilot guidance.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e6-flute geometry for smooth, chatter-resistant cutting action\u003c\/li\u003e\n\u003cli\u003e90-degree included angle with 45-degree centerline angle for standard fastener seat preparation\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability across a range of metalworking applications\u003c\/li\u003e\n\u003cli\u003e1\/8-inch straight-cylindrical shank for direct chucking in standard drill chucks or collets\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting direction compatible with standard rotary tool setups\u003c\/li\u003e\n\u003cli\u003eSingle-end design with no pilot  -  clean, straightforward tool change and setup\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style countersinking tool for use in standard drill chucks and collet holders accepting a 1\/8-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis countersink is installed by a machinist or maintenance technician using a drill press, CNC machine, or hand-held rotary tool equipped with a compatible chuck or collet. Ensure the workpiece is securely clamped before operation to prevent movement during chamfering. Power down and de-energize the machine completely before mounting or removing the tool. Use appropriate cutting fluid for steel workpieces to extend tool life and improve finish quality.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenterline Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes Pilot\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112812\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 919-000-371\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KEO","offers":[{"title":"Default Title","offer_id":51972019847474,"sku":"919-000-371","price":18.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f13ff818c4257ae05a1bd9b15446b56d.jpg?v=1789961180","url":"https:\/\/voomisupply.com\/products\/keo-919-000-371-countersink-1-8-in-90-degree-6-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}