{"product_id":"precision-twist-drill-5998510-45-64-in-screw-machine-drill-bit","title":"Precision Twist Drill 5998510 45\/64 in Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5998510 is a screw machine length drill bit designed for high-performance drilling in demanding trade and industrial applications. Built from high speed steel (HSS) with a coated finish, this bit measures 0.7031 inches (45\/64 inch) in diameter with a 118-degree standard point angle and a web-thinned, tapered web configuration for improved penetration and reduced thrust. The overall length is 4.75 inches with a 3-inch spiral flute. It features a straight-cylindrical shank and right-hand cutting direction, conforming to ANSI standards. Licensed machinists, HVAC service technicians, and trade professionals across multiple disciplines rely on this Series R40 bit for precision work.\u003c\/p\u003e\u003cp\u003eThis screw machine drill bit is engineered for use on titanium as its primary workpiece material, making it appropriate for high-performance and specialty fabrication environments. The screw machine length format provides a shorter, more rigid profile than jobber-length bits, which is advantageous in tight clearance situations or when working in drill press and machine tool setups. The 2.5xD flute-to-diameter ratio supports effective chip evacuation during deeper cuts. It is suited for both production shop and field service scenarios where controlled, accurate hole sizing is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh speed steel construction with coated finish for extended tool life\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle with web-thinned tapered web for reduced entry force\u003c\/li\u003e\n\u003cli\u003eScrew machine length profile provides added rigidity over jobber-length alternatives\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute with 2.5xD ratio for efficient chip clearing\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n\u003cli\u003eMeets ANSI standards for dimensional accuracy and consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and direct-fit screw machine drill bit for applications requiring a 45\/64 inch (0.7031 inch) diameter bore, compatible with standard straight-shank drill chucks across bench-top and floor-standing drill press setups conforming to Series R40 tooling specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with rotating tool safety. Secure the straight-cylindrical shank firmly in the drill chuck before operation and confirm the workpiece is clamped or fixtured to prevent movement. Always power down and de-energize the drilling machine before changing bits. Use appropriate cutting fluid or coolant where the material or cut depth requires it, as this bit does not support through-coolant delivery.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Inch)\u003c\/strong\u003e: 45\/64 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.7031 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3 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: 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: 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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R40\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: 0.5 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: 5998510\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51718901793074,"sku":"5998510","price":76.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6ae6350802bfc2507d6aa4d1fd7a24c4.jpg?v=1788556270","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998510-45-64-in-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}