{"product_id":"precision-twist-drill-5998919-screw-machine-drill-bit","title":"Precision Twist Drill 5998919 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5998919 is a screw machine length drill bit designed for high-performance drilling in metal and hard materials. Built from high speed steel (HSS) with a bright\/uncoated finish, this bit measures 0.261 inches in diameter and carries a standard 118-degree point angle. The overall length is 2-5\/8 inches with a flute length of 1-7\/16 inches, making it a compact stub-length tool suited for close-quarters work. Web-thinned construction reduces thrust and improves chip flow. Licensed machinists, tool-and-die technicians, and maintenance mechanics are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is engineered for use in screw machine operations, CNC drilling setups, and general-purpose production environments. The R42 series is rated for high performance applications and is listed by the manufacturer as suitable for titanium as a primary workpiece material, making it a capable choice for aerospace, medical, and precision machining workflows. The straight-cylindrical shank fits standard three-jaw chucks and collet holders without modification. The 2.5xD flute-to-diameter ratio supports efficient chip evacuation in short-hole drilling cycles.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.261 inch diameter with a standard 118-degree point angle for accurate entry in metal stock\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides heat resistance during high-cycle drilling\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web design reduces cutting thrust and improves penetration\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish allows visual inspection of wear and edge condition\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard chucks and collet systems\u003c\/li\u003e\n  \u003cli\u003eANSI-compliant screw machine length for use in tight clearance setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a screw machine length replacement or production drill bit in Series R42, sized for general purpose drilling in the 0.2500 to 0.3000 inch decimal inch range per ANSI standards. Primary workpiece material listed by the manufacturer is titanium, though the general purpose grade is compatible with a range of metals in typical shop use.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists or tool operators familiar with drilling parameters for the target workpiece material. Secure the straight-cylindrical shank fully in the chuck or collet before operation and confirm runout is within tolerance. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling titanium or other difficult alloys. Follow applicable shop safety standards and machine manufacturer guidelines for spindle speed and feed rate selection.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.261 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: G\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R42\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: 0.042 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: 5998919\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51689205465394,"sku":"5998919","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0bbf707472a350c7757d7624a583ec7.jpg?v=1788256127","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998919-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}