{"product_id":"osg-15312505-cobalt-jobber-drill-bit-5-16-inches-tin","title":"Osg 15312505 Cobalt Jobber Drill Bit 5\/16 Inches Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 15312505 is a cobalt jobber-length drill bit with a titanium nitride (TiN) coating, designed for high-performance drilling in steel and alloy steel. It measures 5\/16 inches (0.3125 inches decimal) in diameter with an overall length of 5 inches and a flute length of 3-3\/16 inches. The 130-degree drill point angle with R-thinned web geometry reduces thrust and improves self-centering on entry. This bit is built for machinists, toolroom technicians, and maintenance professionals who need consistent results in ferrous materials without coolant-through capability.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for blind hole drilling, cross-hole operations, and general drilling applications in steel and alloy steel workpieces. The straight-cylindrical shank at 3\/8 inches diameter fits standard drill chucks and is compatible with manual drill presses, CNC machining centers, and hand-held power drills used in industrial and fabrication environments. It is part of the OSG Series 1500, a line positioned for high-performance production and maintenance drilling tasks.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt construction provides heat resistance and edge retention in ferrous materials\u003c\/li\u003e\n\u003cli\u003eTitanium nitride (TiN) coating reduces friction and extends tool life\u003c\/li\u003e\n\u003cli\u003e130-degree point angle with R-thinned web improves self-centering and reduces walking\u003c\/li\u003e\n\u003cli\u003eRegular spiral flute promotes efficient chip evacuation in through and blind holes\u003c\/li\u003e\n\u003cli\u003eRight-hand cut with 2 flutes for standard CW-rotating spindles\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical 3\/8-inch shank fits most standard drill chucks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for drilling steel and alloy steel workpieces; suitable for use in blind hole, cross-hole, and self-centering drilling applications. Fits any standard chuck accepting a 3\/8-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall in a properly sized drill chuck and verify shank seating before operation. Always power down or lock out the spindle before changing tooling, following OSHA lockout\/tagout procedures. Use appropriate cutting fluid or cutting oil when drilling ferrous metals to extend tool life, even though this bit does not require coolant-through. Inspect the cutting edges for wear before each use and replace when point geometry is compromised to maintain hole-diameter tolerance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eDrill Bit Diameter (mm)\u003c\/strong\u003e: 7.94 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5 inches (127 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3-3\/16 inches (80 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1-9\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: R-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Alloy Steel\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 to -0.022 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.109 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 15312505\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728722723122,"sku":"15312505","price":94.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8eac828cb258e8b88091bd5bab0fc57d.jpg?v=1788695488","url":"https:\/\/voomisupply.com\/products\/osg-15312505-cobalt-jobber-drill-bit-5-16-inches-tin","provider":"Voomi Supply","version":"1.0","type":"link"}