{"product_id":"value-collection-sc1090040-countersink-90-deg-1-flute-hss","title":"Value Collection SC1090040 Countersink 90 Deg 1 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SC1090040 is a single-flute, 90-degree countersink machined from high-speed steel (HSS) for use in metalworking and general fabrication applications. It accepts a straight cylindrical 1\/2-inch shank and produces a 90-degree included angle countersink with a 45-degree centerline angle. The 5\/8-inch head diameter makes it well-suited for creating clean, chamfered seat profiles for flat-head fasteners in metal, wood, and composite materials. The bright, uncoated finish is appropriate for standard-duty countersinking operations. Machinists, toolmakers, and skilled fabricators typically select this tool for manual drill press or CNC lathe use where a simple, reliable countersink profile is required.\u003c\/p\u003e\n\u003cp\u003eThis countersink is designed for right-hand cutting direction and is used in single-end countersinking operations without a pilot. It is suited for residential shop, commercial machine shop, and light industrial environments. Common applications include deburring drilled holes and producing fastener seat geometry in ferrous and non-ferrous metals as well as plastics and hardwoods. It does not include a pilot guide, so proper center alignment of the existing pilot hole is required before use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e90-degree included angle and 45-degree centerline angle for standard flat-head fastener seating\u003c\/li\u003e\n  \u003cli\u003eSingle-flute design provides smooth cutting action and reduces chatter on manual equipment\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction offers durability across a range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical 1\/2-inch shank fits standard drill chucks and collet holders\u003c\/li\u003e\n  \u003cli\u003e5\/8-inch head diameter accommodates common countersink sizes for flat-head fasteners\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish — no coating to chip or peel during standard-duty use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard-duty replacement or supplemental countersink for drill presses, lathes, and milling machines equipped with a 1\/2-inch chuck or collet capable of accepting a straight cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or skilled fabricators. Secure the straight cylindrical shank firmly in a properly sized chuck or collet before operation. Ensure the workpiece is clamped securely and the pilot hole is centered before applying the countersink. Use appropriate cutting fluid for ferrous metals to extend tool life and improve finish quality.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inches\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: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Countersinking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 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: SC1090040\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709916119346,"sku":"SC1090040","price":24.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1b04daa791a554f13b348daefec52019.jpg?v=1788462248","url":"https:\/\/voomisupply.com\/products\/value-collection-sc1090040-countersink-90-deg-1-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}