{"product_id":"chicago-latrobe-47720-cobalt-jobber-drill-bit-5-16-in","title":"Chicago-latrobe 47720 Cobalt Jobber Drill Bit 5\/16 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 47720 is a cobalt jobber-length drill bit designed for high-performance drilling in hard and abrasive materials. Built to Series 550ASP standards and conforming to NAS 907 Type B specification, this bit features a 135-degree split point for fast penetration and reduced walking on entry. The gold finish indicates a surface treatment applied to cobalt steel, and the right-hand spiral flute geometry evacuates chips efficiently during operation. At 4.5 inches overall length with a 3.1875-inch flute length, it fits standard jobber-length applications across industrial and trade drilling tasks. Licensed tradespeople and machinist-level technicians are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis bit is rated for drilling titanium and other hard metals, making it a fit for aerospace, mechanical, and heavy fabrication work where standard HSS bits wear prematurely. The straight cylindrical shank measures 5\/16 inch in diameter, compatible with standard drill chucks and quick-change holders of matching capacity. The tapered web with web-thinning reduces thrust requirements when entering tough workpieces. Typical applications include structural drilling, precision hole-making in high-alloy materials, and repetitive production drilling where bit longevity is a priority.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction with gold finish for improved heat and wear resistance in hard metals\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces walking and lowers entry thrust on hard surfaces\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web minimizes cutting resistance through difficult materials\u003c\/li\u003e\n  \u003cli\u003eRight-hand regular spiral flute for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 Type B specification for dimensional and performance consistency\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty grade rated for primary workpiece material: titanium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style jobber-length drill bit for use in standard 5\/16 inch capacity drill chucks and compatible quick-change systems in industrial and trade drilling applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists, tool-and-die technicians, or experienced tradespeople operating drill presses, CNC drilling centers, or hand-held power drills. Secure the straight cylindrical shank fully within the chuck and verify concentricity before drilling. Use appropriate cutting fluid or coolant when drilling titanium or high-alloy steels to prevent work hardening and premature bit wear. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed.\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 inch (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 inch (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\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\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Gold\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: +0.0000 to -0.0010 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 550ASP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\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\u003eWeight\u003c\/strong\u003e: 0.074 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: 47720\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51740317253938,"sku":"47720","price":67.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0a4ac7140503a9b4728cd181f2b52cc.jpg?v=1788824255","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-47720-cobalt-jobber-drill-bit-5-16-in","provider":"Voomi Supply","version":"1.0","type":"link"}