{"product_id":"value-collection-sc2090148-countersink-90-deg-6-flute-hss","title":"Value Collection SC2090148 Countersink 90 Deg 6 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SC2090148 is a 6-flute countersink designed for right-hand cutting in metal fabrication and machining applications. Built from high-speed steel (HSS) with a bright, uncoated finish, it produces clean, accurate chamfered holes at a 90-degree included angle (45-degree centerline angle). The 1-inch straight-cylindrical shank provides secure tool holder engagement, and the 1-3\/4-inch head diameter handles countersinking operations across a wide range of fastener sizes. This is a single-end tool with no pilot included. Machinists and tool-and-die professionals use this type of countersink in drill press and milling setups where consistent, repeatable chamfer geometry is required.\u003c\/p\u003e\n\u003cp\u003eThis countersink is suited for production and maintenance machining environments where 90-degree fastener seating is the standard. It is commonly used when preparing holes to accept flat-head screws, rivets, or other flush-mount fasteners in steel, aluminum, and similar materials. The 6-flute geometry reduces chatter and produces a smoother finish compared to fewer-flute designs, making it appropriate for close-tolerance work in both shop and field settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e90-degree included angle (45-degree centerline angle) for standard flat-head fastener seating\u003c\/li\u003e\n  \u003cli\u003e6-flute design minimizes chatter and improves surface finish quality\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides durability across common workpiece materials\u003c\/li\u003e\n  \u003cli\u003e1-3\/4-inch head diameter accommodates a wide range of fastener clearance sizes\u003c\/li\u003e\n  \u003cli\u003e1-inch straight-cylindrical shank for secure chuck or collet holding\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish — suitable for general-purpose countersinking without specialized coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose countersink compatible with standard drill presses, milling machines, and CNC setups accepting a 1-inch straight-cylindrical shank. Intended for countersinking operations in steel, aluminum, and similar machinable materials using 90-degree fastener geometry.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall in a drill press, mill, or lathe tailstock using a chuck or collet rated for the 1-inch shank diameter. Ensure the workpiece is securely clamped before beginning the cut. Run at appropriate spindle speeds for the workpiece material — higher speeds suit aluminum while lower speeds are recommended for harder steels. Inspect the cutting edges for wear before each use; a dull countersink produces poor chamfer geometry and accelerates tool breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\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\u003eHead Diameter\u003c\/strong\u003e: 1-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2-1\/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\u003eEnd Type\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Included\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SC2090148\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51717363138866,"sku":"SC2090148","price":165.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b2b79190d642b8f6a8fb36dfece78419.jpg?v=1788539151","url":"https:\/\/voomisupply.com\/products\/value-collection-sc2090148-countersink-90-deg-6-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}