{"product_id":"cleveland-c70131-cobalt-jobber-drill-bit-12-mm","title":"Cleveland C70131 Cobalt Jobber Drill Bit 12 Mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C70131 is a cobalt jobber-length drill bit built for heavy-duty metal cutting in professional shop and field environments. It measures 12 mm (0.4724 inches) in diameter with an overall length of 5.94 inches and a flute length of 3.976 inches. The 135-degree split point reduces walking on entry and lowers the thrust required to start a hole, making it well suited for interrupted cuts and hard materials. The gold oxide coating adds surface hardness and lubricity. Machinists, tool-and-die technicians, and maintenance tradespeople install this bit in standard drill presses, CNC machines, and hand-held power drills.\u003c\/p\u003e\u003cp\u003eThis bit is designed for drilling aluminum and similar non-ferrous and ferrous materials where a durable cobalt substrate and consistent dimensional tolerance are required. The straight-cylindrical shank (0.4724 inches diameter) fits standard three-jaw chucks without an adapter. The two-flute regular spiral geometry clears chips efficiently in through-hole and blind-hole applications. It conforms to NAS 907 Type J standards, making it appropriate for aerospace-adjacent MRO and production work where specification compliance is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt high-speed steel construction for extended tool life in abrasive and work-hardening materials\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces entry walking and lowers drilling thrust\u003c\/li\u003e\n\u003cli\u003eGold oxide coating improves lubricity and surface hardness\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web design reduces cutting resistance and heat buildup\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank at 0.4724 inches fits standard chuck sizes without adapters\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type J specification for controlled dimensional tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-specification replacement or production drill bit for use in standard drill chucks accepting a 0.4724-inch straight shank, conforming to NAS 907 Type J dimensional requirements.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or tradespeople familiar with drill press and rotary tool operation. Secure the shank fully in the chuck and verify runout before cutting. Use appropriate cutting fluid for the workpiece material to manage heat and extend bit life. Inspect the cutting edges for wear before each use and avoid running the bit at speeds outside the recommended range for the workpiece material and bit diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 12 mm (0.4724 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.94 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.976 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.9685 inches (50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.4724 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 Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral (Regular)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42 Cobalt High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Gold Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\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: NAS 907 Type J\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2213\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.2 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: C70131\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51692726681906,"sku":"C70131","price":39.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/68e71fac92ed610a068aecfe4d190284_a2fc9dc9-4b84-4e00-b832-6b9d2d46b676.jpg?v=1788301798","url":"https:\/\/voomisupply.com\/products\/cleveland-c70131-cobalt-jobber-drill-bit-12-mm","provider":"Voomi Supply","version":"1.0","type":"link"}