{"product_id":"precision-twist-drill-5996390-letter-t-hss-jobber-drill","title":"Precision Twist Drill 5996390 Letter T Hss Jobber Drill","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5996390 is a letter-size T jobber-length drill bit engineered for heavy-duty drilling in high-temperature alloys and other demanding workpiece materials. Built from high-speed steel with a straw (bronze) coating, it features a 135-degree split point with web thinning for fast penetration and reduced walking on entry. The straight cylindrical shank measures 0.358 inches in diameter, matching the letter T designation at a decimal equivalent of 0.3580 inches. With an overall length of 4.875 inches and a flute length of 3.5 inches, this bit suits a wide range of drill press, CNC, and hand-drill applications common in machining, fabrication, and maintenance shops.\u003c\/p\u003e\n\u003cp\u003eThis jobber drill is designed for drilling into high-temperature alloys, cast iron, and general-purpose metals where a consistent, repeatable hole diameter is required. The regular spiral flute and right-hand cutting direction make it a standard fit for conventional drilling setups. It is sold individually and is appropriate for machinists, maintenance technicians, and fabricators who need a reliable letter-size bit for production or field repair work in the T-size range.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter T size with a decimal equivalent of 0.3580 inches for precise hole sizing\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning reduces thrust and minimizes center-punch reliance\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction rated for high-temperature alloy workpieces\u003c\/li\u003e\n  \u003cli\u003eStraw (bronze) coating improves lubricity and extends tool life in metal drilling\u003c\/li\u003e\n  \u003cli\u003eRegular spiral flute with tapered web configuration for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use jobber drill for standard drill chucks accepting a 0.3580-inch straight shank. Falls within the HX10-HX15-HX18 series. Suitable for drilling high-temperature alloys and general metals per primary workpiece material codes P, M, K, and S.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a standard keyed or keyless drill chuck rated for the shank diameter. Secure the shank fully in the chuck before operation and confirm the spindle is at a full stop before bit changes. Use cutting fluid appropriate for the workpiece material to maximize bit life, particularly when drilling high-temperature alloys. Inspect the cutting edges for wear before each use and replace the bit if chipping or dulling is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: Letter T (0.3580 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\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw (Bronze)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.875 inches (4-7\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.5 inches (3-1\/2 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3580 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.375 inches (1-3\/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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard Split Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: High-Temp Alloy (Material Codes P, M, K, S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HX10-HX15-HX18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ANSI\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: 0.005 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: 5996390\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51722463674674,"sku":"5996390","price":21.67,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/164a426c244a50dcd1df57227d075760_6afac09e-6496-4033-b2bf-6f50d7762e01.jpg?v=1788591522","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5996390-letter-t-hss-jobber-drill","provider":"Voomi Supply","version":"1.0","type":"link"}