{"product_id":"chicago-latrobe-46701-cobalt-jobber-drill-bit-no-31","title":"Chicago-latrobe 46701 Cobalt Jobber Drill Bit No 31","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 46701 is a cobalt jobber length drill bit designed for high-performance drilling in hard and abrasive materials. Built to Series 550 standards and manufactured from M42 cobalt high-speed steel, this bit carries a gold oxide finish that helps extend tool life under heat and friction. It features a 135-degree split point for fast, self-centering starts without a center punch. The straight-cylindrical shank measures 0.1200 inches in diameter, matching the No. 31 wire gauge drill size, and the bit has an overall length of 2.75 inches with a flute length of 1.625 inches. It is intended for use by machinists, maintenance technicians, and tool-and-die professionals.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for drilling titanium as its primary workpiece material, making it well suited for aerospace, defense, and precision manufacturing applications where standard high-speed steel bits fail prematurely. The two-flute spiral design with a regular spiral type clears chips efficiently in through-hole and blind-hole operations. Web thinning and a tapered web configuration reduce thrust requirements and improve cutting efficiency at the tip. It conforms to DIN 338 and NAS 907 Type J standards, making it appropriate for controlled manufacturing environments with strict material traceability requirements. Sold individually.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt steel construction for drilling titanium and other hard alloys\u003c\/li\u003e\n  \u003cli\u003e135-degree split point enables self-centering entry and reduces walking\u003c\/li\u003e\n  \u003cli\u003eGold oxide finish improves heat resistance and extends bit life\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web reduces axial thrust during cutting\u003c\/li\u003e\n  \u003cli\u003eMeets DIN 338 and NAS 907 Type J standards for aerospace-grade applications\u003c\/li\u003e\n  \u003cli\u003eNo. 31 wire size (0.1200 inches) with straight-cylindrical shank for standard chuck compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a heavy-duty OEM-style replacement or stock drill bit for use in standard three-jaw drill chucks accepting a 0.1200-inch straight-cylindrical shank. Primary workpiece material is titanium per NAS 907 specification; also suited for other high-strength metals and hard alloys in precision machining and maintenance applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a standard keyed or keyless drill chuck sized for a 0.1200-inch shank. Secure the shank fully in the chuck before operation and confirm runout is within acceptable tolerance for the application. Use appropriate cutting fluid or coolant when drilling titanium or other hard alloys to manage heat buildup. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 31\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1200 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42 Cobalt High-Speed Steel\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\u003eFinish \/ Coating\u003c\/strong\u003e: Gold Oxide\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\u003eOverall Length\u003c\/strong\u003e: 2.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1200 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.125 inches\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\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0005 to 0.0000 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: 550\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: DIN 338, NAS 907 Type J\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: 0.0078 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: 46701\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51727084355890,"sku":"46701","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5e18f3a73fcc1e869d3fccf79cdc8be4.jpg?v=1788673052","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-46701-cobalt-jobber-drill-bit-no-31","provider":"Voomi Supply","version":"1.0","type":"link"}