{"product_id":"chicago-latrobe-47646-cobalt-jobber-drill-bit-5-16-in","title":"Chicago-latrobe 47646 Cobalt Jobber Drill Bit 5\/16 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 47646 is a cobalt jobber-length drill bit designed for high-performance drilling in hard and abrasive materials. It features a 135-degree split point that starts on contact without a center punch and reduces walking on entry. The bit carries a titanium nitride (TiN) coating that extends tool life by reducing friction and heat buildup at the cutting edge. With a 5\/16 inch diameter and 4.5 inch overall length, it fits standard drill chucks and drill presses used by machinists, pipefitters, ironworkers, and maintenance technicians working in metal fabrication and industrial service environments.\u003c\/p\u003e\n\u003cp\u003eThis bit is rated for drilling titanium as its primary workpiece material and is built to NAS 907 Type B standards, making it a legitimate choice for aerospace-adjacent and precision metalworking applications. It is equally suited for stainless steel, high-alloy steels, and other tough ferrous and non-ferrous metals encountered in mechanical and industrial trade work. The straight-cylindrical shank accepts standard drill chucks without adapters. Sold individually.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction provides superior heat resistance compared to standard HSS bits in hard-metal drilling\u003c\/li\u003e\n  \u003cli\u003eTiN coating reduces friction and extends cutting edge life\u003c\/li\u003e\n  \u003cli\u003e135-degree split point enables self-centering starts and reduces thrust required\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web construction lowers cutting resistance through thick stock\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute with regular helix promotes consistent chip evacuation\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 Type B specification for precision and dimensional control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit jobber drill for use in standard 3\/8 inch or larger keyed and keyless drill chucks, drill presses, and CNC drilling operations requiring a 5\/16 inch diameter cobalt bit with a straight-cylindrical shank. Primary workpiece material is titanium per manufacturer specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists and industrial trade technicians using standard drill presses, hand drills, or CNC spindles. Secure the straight-cylindrical shank fully in the chuck before operation. Always match spindle speed to the workpiece material and bit diameter using published feeds-and-speeds references for cobalt tooling. Wear appropriate eye protection and secure the workpiece firmly to prevent rotation during drilling.\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: 3.1875 inches (80.96 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.3126 inches (33.34 mm)\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\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular Helix\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0010 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 550ASP-TN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.003 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: CHICAGO-LATROBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 47646\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51740240249138,"sku":"47646","price":24.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6949e19372b329136f3d6759a44c5bfc.jpg?v=1788823696","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-47646-cobalt-jobber-drill-bit-5-16-in","provider":"Voomi Supply","version":"1.0","type":"link"}