{"product_id":"precision-twist-drill-5999427-screw-machine-drill-bit","title":"Precision Twist Drill 5999427 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999427 is a screw machine length drill bit designed for high-performance metal cutting in demanding trade and production environments. Built from high speed steel with a coated finish, it features a 135-degree split point and web-thinned tip geometry that reduces walking and cutting force at entry. The straight-cylindrical shank seats securely in standard drill chucks. At 0.2656 inches (17\/64 inch) in diameter with an overall length of 2-5\/8 inches and a flute length of 1-7\/16 inches, this bit fits applications where a standard jobber length would be too long for a close-clearance setup.\u003c\/p\u003e\n\u003cp\u003eThis R40C series bit is rated heavy duty and is suited for drilling titanium and other difficult-to-machine materials in production machining, maintenance, and repair operations. The screw machine length profile provides added rigidity compared to jobber-length bits, making it a preferred choice when drilling in fixtures, jigs, or tight machine setups. The regular spiral flute with a 2.5xD flute-to-diameter ratio provides efficient chip evacuation during through-hole and blind-hole operations in both manual and CNC-equipped machines.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point reduces entry walking and lowers required thrust force\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web configuration improves chip flow and reduces heat buildup\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended tool life\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body adds rigidity over standard jobber-length bits\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut with regular spiral flute for standard drilling applications\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and NAS 907 standards for dimensional and performance consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eThe 5999427 falls within the R40C series drill bit size range of 0.2500 to 0.3000 decimal inches and is rated for use with titanium as the primary workpiece material. It fits any standard drill chuck or collet accepting a straight-cylindrical shank of 17\/64 inch diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by machinists and maintenance technicians using standard drill presses, lathes, or CNC machining centers. Secure the shank fully in the chuck before operation and verify runout is within acceptable limits. When drilling titanium or other hard alloys, use appropriate cutting fluid and reduce feed rate to prevent work hardening. Inspect the cutting edges and point for wear before each use and replace when the split point shows signs of rounding or chipping.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 17\/64 inch (0.2656 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\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\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003ePoint Type\u003c\/strong\u003e: Split\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\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\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: R40C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.38 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: 5999427\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51722857709874,"sku":"5999427","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/804dd23b7a189a989e3b4416ecca2ce5.jpg?v=1788596973","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999427-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}