{"product_id":"precision-twist-drill-5998661-screw-machine-drill-bit","title":"Precision Twist Drill 5998661 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5998661 is a screw machine length drill bit designed for high-performance drilling in tight-tolerance applications. Built from high speed steel with a coated finish, it measures 0.042 inches in diameter and features a 135-degree split point with web thinning for fast, accurate starts with minimal walking. At 1-3\/8 inches overall length and a 1\/2-inch flute length, this bit is engineered for stub-length drilling where clearance is limited. It carries a right-hand spiral flute with a straight-cylindrical shank and conforms to ANSI and NAS 907 specifications. Licensed HVAC techs, machinists, and trade professionals working in confined spaces rely on this format for precision work.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for primary use on titanium workpieces and is classified as heavy duty with a flute-to-diameter ratio of 2.5xD, making it suitable for demanding production and maintenance drilling tasks. The R41C series screw machine format is a standard stub-length configuration used across industrial, mechanical, and field service environments where a full-length jobber bit would be impractical. Its compact profile is well suited to drill press, hand drill, or CNC chuck applications where rigidity and runout control matter.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.042 inch diameter, wire gauge size 58, for fine-tolerance holes\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning reduces thrust and minimizes drill walking\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended tool life\u003c\/li\u003e\n  \u003cli\u003eScrew machine length at 1-3\/8 inches overall for use in confined or short-clearance setups\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, regular spiral flute with tapered web configuration\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and NAS 907 standards for dimensional and performance compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard production drill bit for use in screw machine, drill press, hand drill, and CNC chuck setups requiring a stub-length bit in the 0.042 inch diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is intended for use by machinists, maintenance technicians, and trade professionals familiar with small-diameter tooling. Secure the straight-cylindrical shank fully in the chuck before operation and verify runout before drilling. Use appropriate cutting fluid or coolant when drilling titanium or other hard materials to prevent premature wear. Do not exceed the rated speed range for the bit diameter and workpiece material combination.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.042 inches (Wire Gauge 58)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 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\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: 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\u003ePoint Type\u003c\/strong\u003e: Standard\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: R41C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\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: 0.01 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: 5998661\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51721472606514,"sku":"5998661","price":38.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/91042005474140e418b5269c784ad856.jpg?v=1788577812","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998661-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}