{"product_id":"precision-twist-drill-5999099-letter-f-jobber-drill-bit","title":"Precision Twist Drill 5999099 Letter F Jobber Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999099 is a jobber length drill bit sized to Letter F, equivalent to 0.2570 inches decimal, manufactured from high speed steel with a steam oxide coating. It features a standard 118-degree drill point angle, a 2-flute spiral flute configuration with a regular spiral type, and a right-hand cutting direction. The straight-cylindrical shank diameter measures 0.2570 inches. Overall length is 4.125 inches, with a flute length of 2.875 inches. The tapered web with web-thinned geometry reduces thrust during entry. Licensed HVAC technicians, machinists, and general tradespeople who drill through metal substrates will recognize this as a general-purpose workhorse bit suited for production and maintenance drilling.\u003c\/p\u003e\n\u003cp\u003eThis bit is rated for use in steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials, covering ISO material codes P, M, K, N, and S. It fits standard jobber-length drill applications where a flute-to-diameter ratio of 11xD provides adequate chip clearance and reach. The Series R10-R15-R18 designation places it within a family of general-purpose HSS bits designed for consistent performance across light production and maintenance drilling scenarios. No coolant-through capability is present, so external coolant or cutting fluid is recommended when drilling harder alloys.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter F sizing at 0.2570 inches decimal for precise hole diameter\u003c\/li\u003e\n  \u003cli\u003e118-degree standard point angle for general-purpose metal drilling\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and provides light corrosion resistance during storage\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web geometry lowers drilling thrust and improves bit life\u003c\/li\u003e\n  \u003cli\u003e2-flute regular spiral design promotes chip evacuation in through-hole and blind-hole applications\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard 3-jaw drill chucks and keyed chuck systems\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI standards for jobber length drill geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style jobber length drill bit for use in any standard drill press, hand drill, or machining center equipped with a chuck accepting a 0.2570-inch straight-cylindrical shank. Suitable for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium per Series R10-R15-R18 application guidelines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eMachinists, maintenance technicians, and tradespeople install this bit by seating the straight shank fully into a keyed or keyless chuck and tightening securely before operation. Ensure the workpiece is clamped or fixtured to prevent rotation during drilling. When working with harder alloys such as stainless steel or titanium, apply cutting fluid to reduce heat buildup and extend bit life. Inspect the cutting edges for wear before each use and replace the bit if chipping or rounding is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2570 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2570 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 11xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R10-R15-R18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metal, Superalloys and Titanium, Hard Material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Drilling\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\u003eDouble Margin\u003c\/strong\u003e: No\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: 5999099\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51717490639154,"sku":"5999099","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0d1376067efa74e57cf29a3e46baef9d_99c6d3fd-373a-4802-a561-7f34378910ad.jpg?v=1788541400","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999099-letter-f-jobber-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}