{"product_id":"precision-twist-drill-5998631-29-64-screw-machine-drill-bit","title":"Precision Twist Drill 5998631 29\/64 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5998631 is a screw machine length drill bit designed for high-performance drilling in demanding shop and field applications. Ground from high speed steel with a bright uncoated finish, this bit features a 29\/64 inch (0.4531 inch) diameter, a standard 118-degree point angle, and a web-thinned tapered web for reduced thrust and cleaner entry. The straight-cylindrical shank seats securely in standard drill chucks. At 3-9\/16 inches overall length with a 2-1\/8 inch flute, the stub-length body provides added rigidity compared to jobber-length bits, making it well suited for production drilling and tight clearance work.\u003c\/p\u003e\n\u003cp\u003eThis Series R40 bit is rated for right-hand spiral flute cutting and is listed with titanium as the primary workpiece material, though its general-purpose grade suits a wide range of metals and hard plastics encountered in mechanical, HVAC, plumbing, and electrical trade work. Screw machine length bits are a common choice when drill press or hand-drill rigidity is needed in confined spaces or when drilling through structural components, enclosure panels, and fittings. The 2.5xD flute-to-diameter ratio supports chip evacuation at typical feed and speed rates for HSS tooling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e29\/64 inch (0.4531 inch) diameter with a 118-degree standard point angle for accurate starting\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web reduces feed force and minimizes heat buildup at the cutting edge\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides toughness across a range of metals and hard plastics\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length at 3-9\/16 inches overall for increased rigidity over jobber bits\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard 3-jaw drill chucks without adapters\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute geometry promotes consistent chip removal during through-hole drilling\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI standards for dimensional accuracy and performance consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose screw machine length drill bit suitable for use in standard drill presses, hand drills, and CNC drilling fixtures accepting a straight-cylindrical shank in the 29\/64 inch diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should follow standard machining safety practices — secure the workpiece before drilling and verify chuck grip on the shank before applying feed pressure. Ensure the drill press or power tool is de-energized before changing bits. Use appropriate cutting fluid or coolant for the workpiece material when drilling harder metals to extend tool life; this bit does not have a coolant-through design. Follow applicable shop safety codes and PPE requirements for eye and hand protection during all drilling operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Fractional)\u003c\/strong\u003e: 29\/64 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.4531 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\u003eOverall Length\u003c\/strong\u003e: 3-9\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-1\/8 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: 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\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\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\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: 5998631\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51695337636146,"sku":"5998631","price":22.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0793a961b85c0c846dc3f713a1d2bc51.jpg?v=1788334039","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998631-29-64-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}