{"product_id":"precision-twist-drill-5999396-drill-bit-letter-s-hss","title":"Precision Twist Drill 5999396 Drill Bit Letter S Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5999396 is a jobber-length drill bit sized to letter S, equivalent to 0.3480 inches in decimal diameter. It is manufactured from high-speed steel with a steam oxide coating that reduces friction and provides light corrosion resistance during storage and use. The bit features a 118-degree standard point angle, a right-hand spiral flute, and a straight-cylindrical shank sized at 0.3480 inches. Overall length is 4.875 inches with a flute length of 3.5 inches. It is designed for general-purpose drilling applications and is installed by machinists, maintenance technicians, and trade professionals working with drill presses, lathes, and hand-held power drills.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for production and maintenance drilling in a wide range of materials including steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The regular spiral and tapered web configuration with web thinning make it capable in both light and moderate-duty drilling scenarios. It is commonly used in HVAC, plumbing, and electrical trade work where accurate hole sizing to a letter-S diameter is required in metal fabrication or equipment installation tasks.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter S size, 0.3480 inches decimal diameter for precise hole sizing\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle for general-purpose entry into multiple metal types\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating reduces friction and provides light corrosion resistance\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web construction reduces thrust and improves chip evacuation\u003c\/li\u003e\n\u003cli\u003eRight-hand cut with regular spiral flute, 2-flute configuration\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose jobber-length drill bit in Series R10-R15-R18, conforming to ANSI standards, and compatible with any standard drill chuck accepting a 0.3480-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eSecure the shank fully in the drill chuck before use and verify chuck key removal prior to starting the machine. Always wear appropriate eye protection when drilling metal. Maximum drilling depth for this bit is 3.5 inches; avoid exceeding this depth to prevent bit deflection or breakage. No coolant-through capability is present, so use appropriate cutting fluid externally when drilling hard or heat-sensitive materials.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3480 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\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, Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.5 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\u003eOverall Length\u003c\/strong\u003e: 4.875 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: 0.3480 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.375 inches\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R10-R15-R18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\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: 0.083 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: 5999396\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51708349677874,"sku":"5999396","price":19.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0d1376067efa74e57cf29a3e46baef9d_f2e9fa7f-ffec-4fa3-86bb-8b3a2745f0a2.jpg?v=1788445612","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999396-drill-bit-letter-s-hss","provider":"Voomi Supply","version":"1.0","type":"link"}