{"product_id":"precision-twist-drill-5998665-screw-machine-drill-bit","title":"Precision Twist Drill 5998665 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5998665 is a screw machine length drill bit designed for high-performance drilling in demanding industrial and machining applications. Built from high speed steel (HSS) with a coated finish, this bit features a 135-degree split point, web-thinned tip, and a tapered web configuration that reduces walking on entry and lowers feed force. The straight cylindrical shank and spiral flute geometry promote consistent chip evacuation. At 0.041 inches (Wire Size: 59) in diameter with a 1-3\/8-inch overall length and a 1\/2-inch flute length, this compact bit is sized for short-hole and spot-drilling work where rigidity and precision matter. It meets ANSI and NAS 907 standards and is rated for heavy-duty service.\u003c\/p\u003e\n\u003cp\u003eThis bit is well suited for close-tolerance drilling in titanium and other high-strength materials where a stubby, rigid bit reduces deflection. Screw machine length bits are a standard choice on CNC lathes, screw machines, drill presses, and manual machining centers where short overhang is critical. The 2.5xD flute-to-diameter ratio and right-hand spiral flute are matched to aggressive metal removal in production environments. Machinists, toolroom technicians, and precision fabricators working with difficult alloys will find this format reliable for short-run and production drilling alike.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.041 inch diameter, Wire Size 59, for precision small-bore drilling\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning reduces thrust and prevents walking\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended tool life\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length at 1-3\/8 inches overall for maximum rigidity\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, spiral flute with 2.5xD flute ratio for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and NAS 907 specifications for heavy-duty, high-performance service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or production-use screw machine drill bit rated for drilling titanium and comparable high-strength metals; compatible with any machine spindle or chuck accepting a straight cylindrical shank at this diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this bit should be performed by qualified machinists or toolroom technicians familiar with small-diameter HSS tooling. Secure the straight cylindrical shank firmly in a properly sized collet or drill chuck before operation to prevent runout and bit breakage. At this diameter, use appropriate low feed rates and cutting fluid to manage heat buildup and prolong tool life. Inspect the cutting edges for wear or chipping before each use, as small-diameter bits are susceptible to breakage under side load or excessive feed pressure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.041 inches (Wire Size: 59)\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\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\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\u003eSeries\u003c\/strong\u003e: R41C\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: 5998665\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51697135288626,"sku":"5998665","price":38.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/31ac5f43eff76cecbfdb655147a826e3.jpg?v=1788349733","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998665-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}