{"product_id":"cleveland-c15970-5-16-inch-cobalt-jobber-drill-bit-135-deg","title":"Cleveland C15970 5\/16 Inch Cobalt Jobber Drill Bit 135 Deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C15970 is a cobalt jobber-length drill bit designed for drilling superalloys, stainless steel, hardened steels, and other tough materials that wear out standard high-speed steel bits quickly. Built to Series 3780 heavy-duty specifications, it carries an M42 cobalt steel construction and an oxide coating that reduces friction and extends tool life. The 135-degree split point starts on contact without a center punch and minimizes walking on curved or uneven surfaces. With a 5\/16-inch diameter and 4.5-inch overall length, this bit fits standard drill chucks and mag drills used daily in mechanical, HVAC, plumbing, and electrical trade work.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for production and maintenance drilling in residential and commercial trade applications where material hardness demands more than standard HSS tooling. It is a direct fit for handheld drills, drill presses, and magnetic base drills. The straight-cylindrical shank seats securely in three-jaw chucks without slipping under load. Tradespeople working with structural steel, stainless fastener clearance holes, or superalloy components will find this bit appropriate for those demanding cut conditions. It conforms to ASME B94.11M standards.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt steel construction for drilling superalloys and hardened materials\u003c\/li\u003e\n  \u003cli\u003e135-degree split point for self-centering starts and reduced thrust force\u003c\/li\u003e\n  \u003cli\u003eOxide coating reduces friction and improves heat dissipation during drilling\u003c\/li\u003e\n  \u003cli\u003eFast spiral flute geometry promotes efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web design reduces cutting resistance\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard three-jaw drill chucks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a heavy-duty OEM-style jobber drill bit for use with standard three-jaw chucks accepting a 5\/16-inch straight-cylindrical shank; compatible with handheld drills, drill presses, and magnetic base drills used across HVAC, plumbing, electrical, and mechanical trade applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSecure the straight-cylindrical shank firmly in the chuck before operation to prevent slipping under torque. Confirm the drill speed is appropriate for the workpiece material and bit diameter before starting the cut. Use cutting fluid or a suitable coolant when drilling superalloys or stainless steel to extend bit life, noting that this bit is not coolant-through equipped. Follow applicable shop safety practices and ASME B94.11M tooling standards when selecting and operating this bit.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.5 inches (114.30 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2-13\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (Fast)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42 Cobalt Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Superalloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0010 to 0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3780\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ASME B94.11M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification Designation\u003c\/strong\u003e: NAS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: CLEVELAND\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C15970\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51722389160242,"sku":"C15970","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/02e10a3a26bea41aaf797649b8e4efcc_0e820e75-2195-4829-973a-5ede084f5b99.jpg?v=1788590380","url":"https:\/\/voomisupply.com\/products\/cleveland-c15970-5-16-inch-cobalt-jobber-drill-bit-135-deg","provider":"Voomi Supply","version":"1.0","type":"link"}