{"product_id":"precision-twist-drill-5996091-cobalt-screw-machine-drill-bit","title":"Precision Twist Drill 5996091 Cobalt Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5996091 is a cobalt screw machine length drill bit designed for high-performance drilling in hard and tough materials. Part of the M41CO series, it carries a 135-degree split point with web thinning for fast, accurate starts without a center punch. The straight-cylindrical shank seats securely in standard drill chucks and CNC machine tool holders. At 1.75 inches overall length with a 0.75-inch flute, this stub-length geometry delivers added rigidity and reduced deflection compared to jobber-length bits, making it well suited to precision, high-cycle production drilling operations.\u003c\/p\u003e\n\u003cp\u003eThis bit is intended for drilling hard materials including alloy steels, stainless steel, cast iron, titanium, and other work materials that demand elevated heat resistance and edge retention. The M41 high-speed cobalt alloy construction maintains hardness at elevated cutting temperatures generated in production drilling environments. It fits screw machine, turret lathe, drill press, and CNC machining center applications where short overall length and rigidity are required. Wire gauge size 42 corresponds to 0.0935 inches diameter, a common size for tapping undersized holes and precision clearance applications in metalworking and manufacturing trades.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM41 cobalt high-speed steel construction for heat resistance in hard-material drilling\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning for self-centering starts and reduced thrust\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length at 1.75 inches overall for increased rigidity and reduced deflection\u003c\/li\u003e\n  \u003cli\u003eRegular spiral flute with 2.5xD flute-to-diameter ratio for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard chucks and collets\u003c\/li\u003e\n  \u003cli\u003eTapered web configuration with right-hand cut; meets ANSI standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a heavy-duty OEM-style screw machine drill bit for use in metalworking applications requiring wire gauge 42 (0.0935 inch diameter) tooling in standard straight-shank drill chucks, collets, and CNC tool holders.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and tool changes should be performed by qualified machinists or tooling technicians with the machine powered down and locked out per OSHA lockout\/tagout procedures. Secure the shank fully within the chuck or collet before operation and verify runout with a dial indicator in precision applications. Do not exceed the recommended feed and speed parameters for the workpiece material and machine setup. Cutting fluid or coolant is recommended when drilling hard alloy steels and stainless to extend tool life, noting this bit does not have coolant-through capability.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.0935 inches (Wire Gauge 42)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.75 inches\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: M41 Cobalt High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\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: Regular Spiral\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, 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\u003eSeries\u003c\/strong\u003e: M41CO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04167 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: 5996091\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51696685515058,"sku":"5996091","price":46.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/aa2be07eba6984ccd5f161f94448d961_964d98ea-4b8d-489e-8bb7-40de031261ca.jpg?v=1788345219","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5996091-cobalt-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}