{"product_id":"precision-twist-drill-5995978-cobalt-drill-bit-45-64","title":"Precision Twist Drill 5995978 Cobalt Drill Bit 45\/64","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5995978 is a screw machine length cobalt drill bit engineered for high-performance drilling in hard and abrasive materials. Sized at 45\/64 inches (0.7031 inches) in diameter, it features a 135-degree split point that reduces walking and cutting force on entry. The regular spiral flute with a 2.5xD flute-to-diameter ratio promotes efficient chip evacuation. Web thinning and a tapered web configuration improve penetration in tough workpiece materials. This bit is built to ANSI standards and carries an M40 material grade designation, making it a heavy-duty option suited for demanding production and maintenance environments.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is designed for use in hard materials where standard HSS tooling loses its edge too quickly. The screw machine length profile — shorter overall than a jobber bit — provides added rigidity and reduced deflection, which is especially useful in drill press, CNC, or lathe-tailstock applications. It is a solid choice for machinists, maintenance technicians, and fabricators working with hardened steels, stainless, and similarly tough stock. The straight-cylindrical shank fits standard drill chucks without adapters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction with M40 material grade for heat and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces thrust and self-centers on entry without a center punch\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web configuration improves cutting efficiency and reduces torque demand\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body (4-3\/4 inches overall, 3-inch flute) delivers rigidity and reduced deflection\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute promotes consistent chip evacuation during through-hole drilling\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI standards; heavy-duty grade rated for production and repeat-use applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement or standard tooling selection for any drill press, CNC machining center, or hand drill with a chuck accepting a straight-cylindrical shank at 0.7031 inches diameter; rated for hard workpiece materials per Series M40CO specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or maintenance technicians familiar with rotating cutting tools. Secure the straight-cylindrical shank firmly in the chuck before operation and verify runout before engaging the workpiece. Ensure the machine spindle is at a full stop before bit changes. Coolant-through is not supported on this bit; use external flood or mist coolant when drilling hard materials to manage heat buildup.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Inch)\u003c\/strong\u003e: 45\/64\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.7031 inches\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\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\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\u003eFlute Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-3\/4 inches\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Hard Material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\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\u003eWeight\u003c\/strong\u003e: 0.5 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: PRECISION TWIST DRILL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5995978\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51712148373810,"sku":"5995978","price":134.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d0fc5f6262074872d44705f45fbae1b7_dbabe511-67e9-4e6f-a5dd-d52f90df0bf9.jpg?v=1788484438","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5995978-cobalt-drill-bit-45-64","provider":"Voomi Supply","version":"1.0","type":"link"}