{"product_id":"cleveland-c15973-cobalt-drill-bit-21-64-in-135-deg","title":"Cleveland C15973 Cobalt Drill Bit 21\/64 in 135 Deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C15973 is a cobalt jobber length drill bit designed for drilling into superalloys, stainless steel, and other hard or abrasive materials. Built to Series 3780 standards, it carries an M42 cobalt steel construction with an oxide coating for added heat and wear resistance. The 135-degree split point reduces walking and decreases the thrust needed to start a hole, making it well suited for production drilling and field service work. The fast spiral flute geometry promotes efficient chip evacuation. This bit is a heavy-duty tool installed by machinists, maintenance technicians, pipefitters, and mechanical contractors working on metal fabrication and equipment repair tasks.\u003c\/p\u003e\u003cp\u003eThis drill bit is sized at 21\/64 inch diameter with a 4-5\/8 inch overall length, a flute length of 1-11\/16 inches, and a straight-cylindrical shank. It is rated for right-hand cutting and carries a tapered web configuration with web thinning to further lower cutting resistance. The straight shank fits standard three-jaw drill chucks on handheld drills, drill presses, and CNC equipment. Primary workpiece material is superalloy, though the cobalt composition also performs well in hardened steels and cast iron encountered in HVAC, plumbing, and industrial maintenance applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt steel construction rated for superalloy and hard-metal drilling\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces drill walk and lowers required thrust\u003c\/li\u003e\n\u003cli\u003eOxide coating improves heat resistance and extends tool life\u003c\/li\u003e\n\u003cli\u003eFast spiral flute with web thinning promotes chip clearance and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eTapered web configuration adds rigidity across the cutting zone\u003c\/li\u003e\n\u003cli\u003eMeets ASME B94.11M and NAS specification requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit jobber length drill bit for any standard three-jaw chuck accepting a 21\/64 inch straight-cylindrical shank, suitable for handheld drilling equipment, benchtop drill presses, and compatible CNC spindles.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the straight shank fully in the chuck and verify chuck key is removed before starting the drill. Use appropriate cutting fluid or coolant when drilling superalloys or hardened steel to extend tool life and prevent workpiece work-hardening. Inspect the cutting edges and split point for wear or chipping before each use; a dull or chipped cobalt bit in hard materials can cause rapid heat buildup and workpiece damage. Disposal of worn cutting tools should follow applicable shop safety and waste-handling procedures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 21\/64 inches (0.3281 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-11\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2-15\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 21\/64 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish \/ Coating\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Superalloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003eSeries\u003c\/strong\u003e: 3780\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B94.11M, NAS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: C15973\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51691303338290,"sku":"C15973","price":27.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/02e10a3a26bea41aaf797649b8e4efcc_1bf7a238-a4c3-4b61-b00e-58626ce45062.jpg?v=1788282971","url":"https:\/\/voomisupply.com\/products\/cleveland-c15973-cobalt-drill-bit-21-64-in-135-deg","provider":"Voomi Supply","version":"1.0","type":"link"}