{"product_id":"precision-twist-drill-5996529-cobalt-screw-machine-drill-bit","title":"Precision Twist Drill 5996529 Cobalt Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5996529 is a cobalt screw machine length drill bit designed for high-performance drilling in hard and demanding workpiece materials. Built to ANSI standards and classified as M42 cobalt grade, it delivers the heat resistance and edge retention required when cutting hardened steels, stainless, and other tough alloys. The bit measures 0.348 inches in diameter (Letter Size S), with an overall length of 3-1\/16 inches and a flute length of 1-3\/4 inches. The 135-degree split point reduces walking and improves hole entry accuracy without a center punch. Installed by machinists and metal fabricators, this bit fits screw machine and turret lathe applications where short, rigid tooling is required.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for screw machine, turret lathe, and CNC drilling operations where a short flute-to-diameter ratio provides rigidity and reduces deflection. The 2.5xD flute-by-diameter ratio and web-thinned, tapered web configuration make it appropriate for production environments drilling hard materials. The straight-cylindrical shank accepts standard drill chucks across a range of machine types. It is a right-hand cut tool with a regular spiral and is not configured for coolant-through delivery, making it best suited for external flood or mist coolant setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt steel construction for heat resistance in hard material drilling\u003c\/li\u003e\n\u003cli\u003e135-degree split point for fast engagement and reduced drill walk\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web reduces thrust load and improves chip evacuation\u003c\/li\u003e\n\u003cli\u003eScrew machine length (short series) provides rigidity in turret and CNC applications\u003c\/li\u003e\n\u003cli\u003e2.5xD flute-by-diameter ratio balances chip clearance with tool stiffness\u003c\/li\u003e\n\u003cli\u003eANSI-specification compliance for consistent sizing and interchangeability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use tool in any drill chuck or collet accepting a straight-cylindrical shank in the 0.348-inch diameter range, consistent with ANSI-standard screw machine length drill bits in the Series M42CO heavy duty grade.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed machinist or qualified metalworker should install and operate this tooling in appropriate drilling equipment. Secure the straight-cylindrical shank fully in a drill chuck or collet before operation and verify runout before beginning production cuts. Use appropriate cutting fluid or external coolant, as this bit does not support coolant-through delivery. Inspect the cutting edges for wear regularly when drilling hard materials to maintain hole quality and prevent premature tool failure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.348 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-3\/4 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\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt (M42 Grade)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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, 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: Hard Material\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: M42CO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\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: 5996529\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51699365216562,"sku":"5996529","price":30.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/691739fe851d894f4ec47cb5cae18c43_66c75e56-9c32-4282-b15c-0ed8b5cc4970.jpg?v=1788375291","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5996529-cobalt-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}