{"product_id":"precision-twist-drill-5999398-screw-machine-drill-bit","title":"Precision Twist Drill 5999398 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999398 is a screw machine length drill bit engineered for high-performance metal cutting applications. Sized at 0.302 inches in diameter (Letter N), it features a 135-degree split point for fast, accurate penetration with minimal walking on entry. The bit is manufactured from high speed steel with a coated finish to extend tool life and reduce heat buildup during cutting. At 2-13\/16 inches overall length with a 1-5\/8 inch flute length and a 2.5xD flute-to-diameter ratio, this is a stubby, rigid geometry designed for demanding production drilling environments. A web-thinned, tapered web configuration reduces thrust load. Licensed plumbers, machinists, and metalworking tradespeople are the primary installers and operators of this tool.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is built specifically for primary workpiece material: titanium, making it appropriate for aerospace, industrial, and heavy-duty fabrication work where conventional bits underperform. The screw machine length (stub) design provides rigidity in drill press, turret lathe, and CNC machining center applications where a full jobber-length bit would deflect or chatter. The straight-cylindrical shank fits standard drill chucks without adapters. Series R42C is a heavy-duty designation in the PRECISION TWIST DRILL lineup, meeting ANSI and NAS 907 specifications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point reduces walking and decreases required feed force on entry\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web lowers thrust load for cleaner holes in tough alloys\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended service life\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length provides superior rigidity versus jobber-length alternatives\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, spiral flute with 2.5xD ratio for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and NAS 907 standards; heavy-duty Series R42C grade\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard straight-cylindrical shank drill chucks. Rated for primary workpiece material: titanium, and suitable for applications requiring ANSI and NAS 907 specification compliance. Drill bit size falls within the 0.3000 to 0.3500 decimal inch range for this series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by machinists, tool-and-die professionals, or qualified metalworking tradespeople using a compatible drill press, lathe turret, or CNC spindle. Secure the straight-cylindrical shank firmly in the chuck before operation and verify chuck capacity matches the 0.302-inch shank diameter. Use appropriate cutting fluid for titanium to manage heat and prevent premature edge wear. Do not exceed the recommended RPM range for the workpiece material and bit diameter as specified in standard machining data references.\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: 0.302 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: N\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\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\u003eOverall Length\u003c\/strong\u003e: 2-13\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-5\/8 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\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: High Performance\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: R42C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range (Decimal Inch)\u003c\/strong\u003e: 0.3000 to 0.3500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.51 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: 5999398\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51705959448882,"sku":"5999398","price":15.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/908aa22553fb00ceffadc932563495e9.jpg?v=1788432001","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999398-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}