{"product_id":"precision-twist-drill-5999346-screw-machine-drill-bit","title":"Precision Twist Drill 5999346 Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999346 is a screw machine length drill bit engineered for high-performance drilling in demanding industrial applications. Built from high speed steel with a coated finish, this bit measures 0.242 inches in diameter and features a 135-degree split point that reduces walking and decreases the thrust required to start a hole. At 2.5 inches overall length with a 1.375-inch flute length, it is designed to fit standard straight-cylindrical shank drill chucks. The web-thinned, tapered web construction improves chip evacuation and extends tool life in tough materials.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for primary use in titanium and other difficult-to-machine materials, making it a practical choice for aerospace, precision machining, and heavy-duty fabrication environments. The right-hand spiral flute and regular spiral geometry work together to pull chips away from the cutting zone. At a 2.5xD flute-to-diameter ratio, the screw machine length body keeps the bit rigid during short, high-precision boring operations in CNC machines, drill presses, and turret lathes. The R42C series designation identifies this as a heavy-duty grade bit conforming to ANSI and NAS 907 standards.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.242 inch diameter, Letter Size C, within the 0.2000 to 0.2500 inch range\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces drill walking and lowers required thrust\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web improves chip flow and reduces heat buildup\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with coated finish for extended wear resistance\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body provides added rigidity for precision boring\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI and NAS 907 specifications for heavy-duty industrial use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use drill bit for applications requiring a straight-cylindrical shank screw machine length bit in the 0.2000 to 0.2500 inch diameter range, conforming to ANSI and NAS 907 standards. Primary workpiece material is titanium, though the high speed steel construction suits a range of ferrous and non-ferrous metals in production drilling environments.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by qualified machinists or tool and die professionals familiar with drill press, CNC, or turret lathe operation. Ensure the spindle is fully stopped and the machine is powered down before securing or removing the bit from the chuck. Verify chuck compatibility with straight-cylindrical shank tooling before mounting. Appropriate cutting fluid or coolant should be applied per shop practice when drilling titanium or other high-strength materials, even though this bit does not feature through-coolant capability.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.242 inches (Letter Size C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.375 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: 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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\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\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R42C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 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: 5999346\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51711087018290,"sku":"5999346","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e03ec412995d0c681c1ff49a76c4dae0.jpg?v=1788474259","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999346-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}