{"product_id":"precision-twist-drill-5998757-drill-bit-letter-f-hss","title":"Precision Twist Drill 5998757 Drill Bit Letter F Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5998757 is a jobber-length drill bit sized to Letter F (0.2570 inches) for general-purpose drilling in metal and hard materials. Ground from high speed steel (HSS) with a steam oxide coating, the bit runs a 135-degree split point that reduces walking on entry and cuts cleaner holes with less thrust than a standard 118-degree point. The spiral flute geometry and web-thinned construction keep chip evacuation efficient during sustained drilling. It is sized for use with standard drill chucks and is appropriate for use by machinists, maintenance technicians, and general trade professionals working with ferrous and non-ferrous stock.\u003c\/p\u003e\u003cp\u003eThis bit is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It fits production, fabrication, and field maintenance applications where a reliable jobber-length drill is needed without specialized tooling. The 4.125-inch overall length and 2.875-inch flute length give adequate reach for standard-depth holes in plate, structural, and tubular stock. The straight-cylindrical shank seats in both keyed and keyless chucks.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter F diameter — 0.2570 inches — for precise hole sizing without reaming in many applications\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces walking and lowers entry thrust on hard materials\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating provides mild lubricity and corrosion resistance during storage and use\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered-web construction improves chip clearance and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eTwo-flute spiral design handles a broad range of workpiece materials including superalloys and titanium\u003c\/li\u003e\n\u003cli\u003eMeets ANSI standards and NAS 907 specification for consistent dimensional accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose jobber-length drill bit compatible with standard straight-shank drill chucks. Suitable for use on drill presses, hand drills, and CNC drilling operations across Series R10B, R15B, and R18B applications as designated by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eA licensed machinist or qualified technician should verify chuck capacity and spindle speed before mounting. Secure the straight-cylindrical shank fully in the chuck before operation and confirm the chuck key is removed prior to starting the spindle. Use appropriate cutting fluid or coolant when drilling stainless steel, superalloys, or titanium to manage heat and extend tool life. Follow applicable shop safety standards and wear proper eye protection during all drilling operations.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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 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: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard Split Point\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eOverall Length\u003c\/strong\u003e: 4.125 inches (4-1\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.875 inches (2-7\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.875 inches (2-7\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.25 inches (1-1\/4 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\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metal, Superalloys, 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\u003eCoolant Through\u003c\/strong\u003e: No\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: R10B, R15B, R18B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.19 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: 5998757\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51713010008370,"sku":"5998757","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/630ae9ea750d4f4c3de41855fbe582d7_7f6e5503-05e3-4adc-bd3a-ee3cb9f39198.jpg?v=1788490462","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998757-drill-bit-letter-f-hss","provider":"Voomi Supply","version":"1.0","type":"link"}