{"product_id":"precision-twist-drill-5996146-no-54-cobalt-screw-machine-bit","title":"Precision Twist Drill 5996146 No. 54 Cobalt Screw Machine Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5996146 is a cobalt screw machine length drill bit designed for high-performance drilling in hard and difficult-to-machine materials. Built to ANSI standards in the M41CO series, this bit carries a No. 54 wire gauge designation with a decimal diameter of 0.0550 inches. The 135-degree split point with web thinning reduces thrust and enables self-starting on flat and curved surfaces without center-punching. Overall length is 1-5\/8 inches with a 5\/8-inch flute length, making it suited for compact drilling applications in tight clearance environments. Licensed machinists, HVAC fabricators, and industrial maintenance technicians are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis screw machine bit is intended for drilling hard metals and heavy-duty materials where standard high-speed steel bits wear prematurely. The stub-length geometry provides added rigidity and reduces deflection during short-hole drilling operations. Typical applications include production drilling in sheet metal, hardened steel components, stainless fastener clearance holes, and precision boring in fixtures or jigs. The right-hand spiral flute configuration handles standard rotary drilling in any industry-standard drill press, CNC machining center, or hand drill.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction (M41 material grade) resists heat and wear in hard material drilling\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning reduces cutting thrust and eliminates walking\u003c\/li\u003e\n  \u003cli\u003eScrew machine length geometry provides rigidity and minimizes deflection in short-hole applications\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank at 0.0550 inches fits standard drill chucks without adapters\u003c\/li\u003e\n  \u003cli\u003eRegular spiral, tapered web configuration maintains chip clearance through the 5\/8-inch flute\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 an OEM-style replacement or direct-use screw machine drill bit for standard drill chucks and collets accepting a 0.0550-inch straight-cylindrical shank, compatible with drill presses, CNC machining centers, and hand drills used in production and maintenance applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists and maintenance technicians familiar with rotating cutting tools. Secure the straight-cylindrical shank fully in the chuck before operation and confirm runout is within acceptable limits before drilling. Always wear appropriate eye protection and follow shop safety procedures when operating drilling equipment. Do not exceed the recommended RPM 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 Size (Wire)\u003c\/strong\u003e: No. 54\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.0550 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt (M41 Grade)\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: Standard Split Point, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0550 inches\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute-to-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: M41CO\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: 0.04167 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: 5996146\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51715943301426,"sku":"5996146","price":51.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/aa2be07eba6984ccd5f161f94448d961_27ca58ee-ae1a-4ba8-a487-a86630815842.jpg?v=1788520044","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5996146-no-54-cobalt-screw-machine-bit","provider":"Voomi Supply","version":"1.0","type":"link"}