{"product_id":"3-8-90-deg-3-flute-countersink-1-4-round-shank-hss_dewcsk3-8-90","title":"3\/8\"-90 Degree 3 Flute Countersink | HSS | 1\/4\" Round Shank | DEWCSK3\/8-90","description":"\u003cdiv\u003e\n\u003cp\u003eIndustrial countersinks manufactured in High-Speed Steel for precision countersinking in metalworking and fabrication. This 3\/8″ diameter countersink features a 90° angle, 3 flutes, and a 1\/4″ round shank designed for compatibility with standard milling holders and CNC collets.\u003c\/p\u003e \u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eDiameter:\u003c\/b\u003e 3\/8″\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCountersink angle:\u003c\/b\u003e 90°\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFlutes:\u003c\/b\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eShank:\u003c\/b\u003e 1\/4″ round\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDrive type:\u003c\/b\u003e Round shank\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial grade:\u003c\/b\u003e HSS\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eThree-flute design:\u003c\/b\u003e Improves chip evacuation and provides a cleaner finish in metal and plastic during countersinking operations.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e90° countersink angle:\u003c\/b\u003e Enables flush seating for standard flat-head screws and consistent countersink depth.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e High-Speed Steel (HSS) offers hardness and heat resistance for repeated tool life at typical machining speeds.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eShank interface:\u003c\/b\u003e 1\/4″ round shank provides compatibility with common milling and CNC tool holders, ensuring secure grip and minimizing runout.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications:\u003c\/b\u003e Suitable for creating flush countersinks in sheet metal, aluminum components, and plastic enclosures used in industrial equipment and assembly lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Drill America","offers":[{"title":"Default Title","offer_id":53412446404887,"sku":"DEWCSK3\/8-90","price":6.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/15.jpg?v=1779456050","url":"https:\/\/mutualscrew.com\/products\/3-8-90-deg-3-flute-countersink-1-4-round-shank-hss_dewcsk3-8-90","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}