{"product_id":"precision-twist-drill-5996181-cobalt-screw-machine-drill-bit","title":"Precision Twist Drill 5996181 Cobalt Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5996181 is a cobalt screw machine length drill bit designed for high-performance drilling in hard and abrasive materials. Built to Series M41CO standards, this bit features a 135-degree split point for fast starts and reduced walking, a web-thinned tapered web for easier penetration, and a straight-cylindrical shank for solid chuck retention. At 0.157 inches (wire size #22) in diameter, it is sized for precision work in tight-tolerance applications. Licensed machinists, tool-and-die tradespeople, and HVAC or mechanical contractors drilling into hard metals rely on this grade of bit for reliable performance and extended tool life.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for drilling hard and difficult-to-machine materials including hardened steels, stainless, and other tough alloys where standard high-speed steel bits fail prematurely. The screw machine length profile — shorter than jobber length — provides increased rigidity and reduced deflection in drill press, CNC, and turret lathe setups. It is also commonly used in hand drilling applications where control and precision are critical. Its right-hand spiral flute design clears chips efficiently throughout the cut.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction (M41 material grade) for heat resistance and extended life in hard materials\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces thrust and eliminates center punch requirement on most surfaces\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web improves penetration and reduces cutting force\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body (overall length 2-1\/8 inches) provides superior rigidity over jobber-length bits\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n  \u003cli\u003eRegular spiral flute with 2.5xD flute-to-diameter ratio for effective chip evacuation\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI specification standards for dimensional accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a screw machine length replacement bit for #22 wire gauge (0.157 inch) drilling applications in hard and high-strength materials, compatible with standard straight-shank drill chucks across drill press, CNC turret, and hand-drill setups.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall the straight-cylindrical shank securely into the drill chuck and tighten fully before operation. Power down all equipment completely before changing bits. Use appropriate cutting fluid or coolant when drilling hard metals to preserve edge life, noting this bit does not support coolant-through delivery. Ensure workpiece is clamped securely to prevent movement during drilling.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.157 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Size\u003c\/strong\u003e: #22\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-1\/16 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\u003eTool Material\u003c\/strong\u003e: Cobalt (M41 Grade)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: M41CO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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 by Diameter Ratio\u003c\/strong\u003e: 2.5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\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: 0.042 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 5996181\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51723293229362,"sku":"5996181","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/aa2be07eba6984ccd5f161f94448d961_75e1ad1b-e4b7-4b1c-b2a1-e1b04919dfde.jpg?v=1788602785","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5996181-cobalt-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}