{"product_id":"21-64-cobalt-quick-change-hex-shank-drill-bit_cohex21-64","title":"21\/64\" Quick Change Hex Shank Drill Bit | Cobalt | COHEX21\/64 (6 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eQuantity: 6-piece set\u003c\/li\u003e \u003cli\u003eDiameter: 21\/64 in (0.328125 in) \/ 8.34 mm\u003c\/li\u003e \u003cli\u003eMaterial: Cobalt steel alloy\u003c\/li\u003e \u003cli\u003eShank: Hex\u003c\/li\u003e \u003cli\u003eStyle: Quick-change hex shank drill bit\u003c\/li\u003e \u003cli\u003eBit type: Drill bit\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eCobalt alloy provides greater hardness and heat tolerance, improving edge retention when drilling through hard metals such as stainless steel and alloy steels\u003c\/li\u003e \u003cli\u003eHex shank reduces slippage in hex-driven chucks and minimizes wobble during operation\u003c\/li\u003e \u003cli\u003eDurable construction supports longer tool life under high-temperature drilling conditions\u003c\/li\u003e \u003cli\u003eDesigned for metalworking and fabrication tasks requiring medium-diameter holes in tough materials\u003c\/li\u003e \u003cli\u003eUse scenarios: pilot holes in stainless steel, drilling through cast iron, and enlarging holes in hard alloys\u003c\/li\u003e \u003cli\u003ePractical tips: apply cutting fluid or oil to manage heat, clamp work securely, and use steady feed to improve hole quality\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePhysical\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003ePackaged as a 6-piece set\u003c\/li\u003e \u003cli\u003eShank type: Hex (suitable for hex chucks and related fastening systems)\u003c\/li\u003e \u003cli\u003eDesign supports quick-change style use when paired with appropriate hex-driven tooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Drill America","offers":[{"title":"Default Title","offer_id":52312657985815,"sku":"COHEX21\/64","price":41.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/cohex3-64_f6a06358-8059-4fd3-aeb1-487785dd4659.jpg?v=1771965624","url":"https:\/\/mutualscrew.com\/products\/21-64-cobalt-quick-change-hex-shank-drill-bit_cohex21-64","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}