{"product_id":"precision-twist-drill-5995991-cobalt-drill-bit-5-64-in","title":"Precision Twist Drill 5995991 Cobalt Drill Bit 5\/64 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5995991 is a screw machine length cobalt drill bit designed for drilling hard and difficult-to-machine materials. Built to the M40CO series specification, it features a 135-degree split point for fast penetration and reduced walking on contact. The straight-cylindrical shank seats securely in standard drill chucks, and the web-thinned, tapered web construction reduces cutting force. At 0.0781 inches (5\/64 inch) in diameter with an overall length of 1-11\/16 inches, this bit is suited for close-tolerance work in tight spaces. It meets ANSI standards and is rated for heavy-duty, high-performance applications.\u003c\/p\u003e\u003cp\u003eThis drill bit is intended for use in screw machine operations, production drilling, and general metalworking applications where hard or abrasion-resistant workpiece materials are encountered. The cobalt construction provides heat resistance that holds up under high-speed drilling without coolant, making it practical for shop floor and field use by machinists, maintenance technicians, and metalworking tradespeople. The short flute length of 11\/16 inch and 2.5xD flute-to-diameter ratio are optimized for rigidity and chip evacuation in shallow-hole applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt tool material with coated finish for extended wear resistance in hard materials\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces thrust and eliminates center-punching on most metals\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web lowers cutting resistance and improves chip flow\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length provides added rigidity compared to jobber-length bits\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute with regular helix for reliable chip evacuation\u003c\/li\u003e\n\u003cli\u003eMeets ANSI standards; rated heavy-duty and high-performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and production-use drill bit for standard straight-shank drill chucks compatible with 5\/64 inch diameter tooling in screw machine and bench drill press applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by a machinist or maintenance technician into any standard drill chuck accepting a straight-cylindrical shank. Ensure the chuck is fully tightened and the workpiece is firmly secured before operation. No coolant-through capability is present on this bit; use external cutting fluid when drilling hard or stainless alloys to extend tool life. Inspect the cutting edges before each use and replace if chipping or dulling is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.0781 inches (5\/64 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-11\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 11\/16 inch\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\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 2.5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Hard Material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: M40CO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04167 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: PRECISION TWIST DRILL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5995991\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51720867381554,"sku":"5995991","price":47.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d0fc5f6262074872d44705f45fbae1b7_6226f875-2336-458b-a519-ba71e0422d1a.jpg?v=1788570221","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5995991-cobalt-drill-bit-5-64-in","provider":"Voomi Supply","version":"1.0","type":"link"}