{"product_id":"1-2-90-deg-3-flute-countersink-3-8-round-shank-hss_dewcsk1-2-90","title":"1\/2\"-90 Degree 3 Flute Countersink | HSS | 3\/8\" Round Shank | DEWCSK1\/2-90","description":"\u003cdiv\u003eIndustrial countersinking tooling for precision hole preparation in metalworking and fabrication. This 1\/2\" diameter, 90° countersink features a 3\/8\" round shank and High Speed Steel construction for demanding applications. \u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eDiameter\u003c\/b\u003e: 1\/2\"\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAngle\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: 3\/8\" Round\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: HSS (High Speed Steel)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eThree-flute geometry\u003c\/b\u003e enables efficient chip evacuation and smooth hole finishing during countersinking operations.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eCountersink angle\u003c\/b\u003e is 90° to create standard flush seating for common fasteners and reduce seating variance.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eRound shank\u003c\/b\u003e design \u003cb\u003e3\/8\"\u003c\/b\u003e provides reliable retention and compatibility with standard drill chucks and holders.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e is HSS, delivering superior wear resistance and hot hardness for repeated countersinking cycles in metalworking.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplications\u003c\/b\u003e include screw-seat preparation and hole chamfering for machine components, fixtures, and enclosures in industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSurface interaction\u003c\/b\u003e supports clean edge conditioning and burr reduction at the entry of countersunk holes. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Drill America","offers":[{"title":"Default Title","offer_id":53412446470423,"sku":"DEWCSK1\/2-90","price":7.35,"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\/1-2-90-deg-3-flute-countersink-3-8-round-shank-hss_dewcsk1-2-90","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}