{"product_id":"precision-twist-drill-5998490-screw-machine-drill-bit","title":"Precision Twist Drill 5998490 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5998490 is a screw machine length drill bit designed for high-performance drilling in demanding trade and industrial applications. Built from high speed steel with a bright, uncoated finish, this bit measures 35\/64 inch (0.5469 inches) in diameter and carries a 118-degree standard point angle for reliable, centered entry on a wide range of materials. The straight-cylindrical shank and web-thinned, tapered web construction reduce cutting resistance and improve chip evacuation. It is intended for installation by machinists, maintenance technicians, and skilled tradespeople working with drill presses, lathes, or hand-held equipment requiring stubby, rigid tooling.\u003c\/p\u003e\u003cp\u003eThis Series R40 bit is rated for high-performance cutting and is listed with a primary workpiece material of titanium, making it appropriate for aerospace, industrial maintenance, and general-purpose fabrication environments where harder materials are encountered. The screw machine length format provides a shorter overall profile than jobber-length bits, increasing rigidity and reducing deflection in short-hole drilling operations. It conforms to ANSI standards and is suited for shops and field technicians who require consistent, repeatable results in production or repair settings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e35\/64 inch (0.5469 inches) diameter with a 118-degree standard point angle for accurate entry\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability across general-purpose and high-performance applications\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web design reduces thrust load and improves chip flow\u003c\/li\u003e\n\u003cli\u003eScrew machine length provides increased rigidity and reduced deflection compared to jobber-length bits\u003c\/li\u003e\n\u003cli\u003eSpiral flute with 2.5xD flute-to-diameter ratio supports efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eConforms to ANSI standards; right-hand cut with straight-cylindrical shank for broad machine compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a screw machine length replacement or production drill bit for use in standard drill chucks accepting a straight-cylindrical shank in the 0.5000 to 0.6000 inch diameter range, conforming to ANSI specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the shank fully in a drill chuck rated for the diameter before operation and verify chuck key is removed before powering the machine. Power down and de-energize all equipment before changing bits. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life, noting that this bit does not support coolant-through delivery. Always wear appropriate eye protection and follow applicable OSHA and facility safety standards when operating drilling equipment.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Fractional)\u003c\/strong\u003e: 35\/64 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.5469 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\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.5 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\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R40\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: 0.5 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 5998490\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51715111682354,"sku":"5998490","price":49.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5270a86620b735e6af626830105ef090.jpg?v=1788509606","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998490-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}