{"product_id":"precision-twist-drill-5998257-jobber-drill-bit-no-28","title":"Precision Twist Drill 5998257 Jobber Drill Bit No. 28","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5998257 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. It carries a No. 28 wire gauge designation, equivalent to a 9\/64 inch (0.1405 inch decimal) diameter, and features a 118-degree standard point angle ground to a bright, uncoated finish. The two-flute spiral design with a tapered web and web-thinned point reduces thrust and improves chip evacuation. Made from high speed steel, this bit is suited for production or maintenance drilling performed by machinists, tool-room technicians, and general trade professionals.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is intended for use on steel, cast iron, non-ferrous metals, superalloys, and titanium in standard drilling applications. With a 2.875-inch overall length and a 1.75-inch flute length, it fits standard drill chucks and handheld power tools used in maintenance, fabrication, and light manufacturing environments. The straight cylindrical shank diameter matches the drill diameter at 0.1405 inches, allowing secure chuck engagement without adapters. It is packaged and sold individually and is part of the R10H-R18H series.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNo. 28 wire gauge size — 9\/64 inch (0.1405 inch) diameter for precise hole sizing\u003c\/li\u003e\n  \u003cli\u003e118-degree standard point angle for general-purpose entry in ferrous and non-ferrous stock\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction for durability across a broad range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web design reduces drilling thrust and extends bit life\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish — compatible with cutting fluids without coating interference\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute with regular helix promotes consistent chip removal\u003c\/li\u003e\n  \u003cli\u003eANSI standard compliance for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose jobber-length drill bit compatible with standard three-jaw drill chucks accepting a straight cylindrical shank. Rated for drilling steel, cast iron, non-ferrous metals, superalloys, and titanium per workpiece material codes P, K, N, and S. Part of the R10H-R18H series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall in a standard drill chuck, ensuring the shank is fully seated and the chuck is tightened securely before operation. Power down or de-energize any machine tool before changing bits. Apply appropriate cutting fluid for ferrous workpieces to manage heat and extend bit life. Drilling depth should not exceed the rated maximum flute depth of 1.75 inches in a single pass without chip-clearing cycles.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Inch)\u003c\/strong\u003e: 9\/64 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1405 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\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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, Regular Helix\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: 0.1405 inches (9\/64 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.875 inches (2-7\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.75 inches (1-3\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.75 inches (1-3\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.125 inches (1-1\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 12xD\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Cast Iron, Non-Ferrous Metal, Superalloys and Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Drilling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance Grade\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R10H-R18H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 5998257\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51723891212594,"sku":"5998257","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4691d72f892b92915254364cb4aea851_dbd6f694-7dfa-47c8-8b24-7e42b606f685.jpg?v=1788609414","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998257-jobber-drill-bit-no-28","provider":"Voomi Supply","version":"1.0","type":"link"}