{"product_id":"precision-twist-drill-5998970-screw-machine-drill-bit","title":"Precision Twist Drill 5998970 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5998970 is a screw machine length drill bit engineered for high-performance drilling in metal fabrication and machining applications. Built from high speed steel with a bright\/uncoated finish, this bit features a 0.397-inch diameter, a 118-degree standard point angle, and a web-thinned tapered web configuration for improved penetration and reduced thrust. The straight-cylindrical shank ensures secure seating in standard drill chucks and machine spindles. At 3-5\/16 inches overall length with a 1-15\/16-inch flute length, the screw machine format is designed for rigid, close-tolerance work where a shorter body reduces deflection and increases rigidity.\u003c\/p\u003e\u003cp\u003eThis bit is suited for use in CNC machining centers, drill presses, and manual screw machines operating on ferrous and non-ferrous stock. The Series R42 designation places it in a general-purpose high-performance line rated for drilling titanium and similarly demanding primary workpiece materials. The 2.5xD flute-to-diameter ratio supports efficient chip evacuation in shorter hole depths typical of screw machine work. ANSI standards compliance confirms dimensional accuracy for interchangeable use across compatible tooling setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.397-inch (Letter X) diameter with ANSI-compliant dimensional accuracy\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle with web-thinned tapered web for reduced entry thrust\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction rated for titanium and general-purpose metal drilling\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish suitable for use with cutting fluids\u003c\/li\u003e\n\u003cli\u003eScrew machine length body minimizes deflection in rigid setups\u003c\/li\u003e\n\u003cli\u003eRight-hand spiral flute with 2.5xD flute ratio for efficient chip removal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard-use drill bit for screw machine length applications within the 0.3500 to 0.4000 inch diameter range, fitting standard straight-shank drill chucks and machine spindles.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eMachinist or CNC operator installation. Secure the straight-cylindrical shank fully into the chuck or collet before operation and verify runout before cutting. Power down and de-energize the machine spindle completely before changing bits. Follow shop safety protocols and applicable ANSI machining standards when operating at speed in hard materials such as titanium.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.397 inches (Letter X)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-15\/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\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: R42\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: 0.083 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: 5998970\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51711648301362,"sku":"5998970","price":23.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4cf88e5bc108c11090eb808295b72f67.jpg?v=1788478114","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998970-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}