{"product_id":"cleveland-c16640-jobber-drill-bit-no-28-cobalt-tin","title":"Cleveland C16640 Jobber Drill Bit No.28 Cobalt Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C16640 is a cobalt jobber-length drill bit in wire gauge size No. 28 (0.1405 inches decimal), designed for high-performance drilling in tough materials. Built to M42 cobalt steel grade and coated with Titanium Nitride (TiN), it delivers extended tool life and superior heat resistance compared to standard HSS bits. The 135-degree split-point tip reduces walking and enables faster penetration without a center punch. The parabolic flute geometry improves chip evacuation in deep-hole drilling applications. This bit is installed and used by machinists, millwrights, and maintenance professionals working in industrial and commercial settings.\u003c\/p\u003e\n\u003cp\u003eThe C16640 is suited for drilling stainless steel, alloy steel, cast iron, and other hard or abrasive materials where standard high-speed steel bits underperform. Its straight-cylindrical shank accepts standard three-jaw drill chucks. The 2-7\/8-inch overall length and 1-3\/4-inch flute length make it appropriate for general-purpose production drilling, MRO work, and precision hole-making where tight diameter tolerance is required. Conforms to ASME B94.11M and DIN 338 standards.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt steel construction for heat and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003eTitanium Nitride (TiN) coating extends cutting life and reduces friction\u003c\/li\u003e\n  \u003cli\u003e135-degree split-point tip eliminates walking and reduces thrust force\u003c\/li\u003e\n  \u003cli\u003eParabolic flute design promotes efficient chip removal in deeper cuts\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web configuration reduces cutting resistance\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B94.11M and DIN 338 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard three-jaw drill chucks accepting a straight-cylindrical shank of 0.1405 inches diameter. Fits benchtop drill presses, CNC machining centers, and hand-held power drills configured for jobber-length bits in the No. 28 wire gauge range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this bit is typically performed by machinists or maintenance technicians. Secure the straight shank fully in the chuck and confirm concentricity before drilling. Always operate within the spindle speed range recommended for cobalt bits at the workpiece material and diameter. Wear appropriate eye and hand protection; do not exceed rated drill press capacity for the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: No. 28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1405 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\u003eMaterial Grade\u003c\/strong\u003e: M42 Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Parabolic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1405 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.13 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0007 to 0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B94.11M, DIN 338\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2075T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\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: C16640\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51697655873842,"sku":"C16640","price":26.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/72ec45573fd3d9ebc084e87d2026b024_3ac76fc0-b742-43fb-931d-f36a3f768c0d.jpg?v=1788353829","url":"https:\/\/voomisupply.com\/products\/cleveland-c16640-jobber-drill-bit-no-28-cobalt-tin","provider":"Voomi Supply","version":"1.0","type":"link"}