{"product_id":"precision-twist-drill-5997255-screw-machine-drill-bit","title":"Precision Twist Drill 5997255 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5997255 is a screw machine length drill bit designed for high-performance drilling in steel and cast iron. It measures 1\/16 inch (0.0625 inch) in diameter with a 1-5\/8 inch overall length and a 5\/8 inch flute length. The 135-degree split point reduces walking on entry and lowers thrust force, making it well suited for production drilling and close-tolerance work. Manufactured from high-speed steel with a bright, uncoated finish, this bit is part of the QC41P series and features a parabolic flute geometry that promotes fast chip evacuation and reduces heat buildup during cutting.\u003c\/p\u003e\n\u003cp\u003eThis bit is intended for screw machine and short-hole drilling applications where a stub-length tool provides rigidity and accuracy. The parabolic flute design with a 3xD flute-to-diameter ratio makes it effective in both manual and CNC-guided drilling setups. Primary workpiece materials include steel and cast iron, making it a practical choice for machinists, maintenance technicians, and fabricators working in metal fabrication shops, HVAC equipment manufacturing, and general industrial maintenance environments. 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\u003e135-degree split point reduces thrust and prevents bit walk on hard metal surfaces\u003c\/li\u003e\n  \u003cli\u003eParabolic flute geometry accelerates chip evacuation and reduces heat in the cut\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length provides increased rigidity over jobber-length bits\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction handles steel and cast iron without chipping\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web design improves cutting efficiency at small diameters\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank fits standard 3-jaw drill chucks directly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a screw machine length replacement drill bit for use in standard drill chucks accepting a 0.0625 inch straight shank, conforming to ANSI standards for stub-length HSS drill bits.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove this bit only when the drill press, hand drill, or CNC spindle is fully powered down and at rest. Secure the straight shank firmly in the chuck and verify concentricity before beginning a cut to avoid deflection at this small diameter. Right-hand cutting direction requires standard forward spindle rotation. Use appropriate cutting fluid or lubricant when drilling cast iron or hard steel to extend bit life.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1\/16 inch (0.0625 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 5\/8 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 Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Parabolic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Fast\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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0625 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Cast Iron\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: QC41P\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: 5997255\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51699630211378,"sku":"5997255","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66bfabf0a9e7051fa8ae2655b5798bc2.jpg?v=1788378462","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997255-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}