{"product_id":"value-collection-sc1090020-countersink-90-degree-hss","title":"Value Collection SC1090020 Countersink 90 Degree Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION SC1090020 is a single-flute, high-speed steel countersink designed to produce clean, chamfered seat profiles in metal and other machinable materials. With a 90-degree included angle and a 45-degree centerline angle, it cuts right-hand in standard drill press and hand-drill setups. The 1\/4-inch straight-cylindrical shank fits common drill chucks and quick-change holders. The bright uncoated finish suits general-purpose countersinking where coating is not required. Machinists, tool-and-die technicians, and maintenance professionals reach for this type of tool when preparing holes to accept flat-head fasteners or to deburr drilled openings.\u003c\/p\u003e\n\u003cp\u003eThis countersink is suited to light-duty production and maintenance applications in machine shops, fabrication environments, and field repair settings. It is intended for countersinking operations in ferrous and non-ferrous metals, plastics, and composites at moderate speeds. The single-flute geometry provides smooth entry and reduces chatter in handheld and fixture-assisted setups. No pilot is included, so it is used freehand or guided by an existing hole.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e90-degree included angle for standard flat-head fastener seating\u003c\/li\u003e\n  \u003cli\u003eSingle-flute design reduces chatter and provides clean entry\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction handles moderate-speed metal cutting\u003c\/li\u003e\n  \u003cli\u003e1\/4-inch straight-cylindrical shank fits common drill chucks and quick-change holders\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish for general-purpose countersinking\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting direction compatible with standard drill rotation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose countersink for use with standard drill presses, hand drills, and milling machines equipped with a 1\/4-inch chuck or collet. No specific OEM model compatibility is stated by the manufacturer.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eA licensed machinist or experienced technician should secure the shank fully in the chuck before operation. Power down or de-energize the drilling equipment completely before installing or removing the countersink. Run at appropriate surface speeds for the workpiece material — excessive speed or feed pressure can cause premature wear on high-speed steel tooling. Secure the workpiece firmly to prevent rotation during cutting.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 5\/16 inches\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\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eWeight\u003c\/strong\u003e: 0.09 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: SC1090020\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51694782611762,"sku":"SC1090020","price":17.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bd496bbec633cb844fb46063cd0ce378.jpg?v=1788328376","url":"https:\/\/voomisupply.com\/products\/value-collection-sc1090020-countersink-90-degree-hss","provider":"Voomi Supply","version":"1.0","type":"link"}