{"product_id":"precision-twist-drill-5997151-jobber-drill-bit-21-32-in","title":"Precision Twist Drill 5997151 Jobber Drill Bit 21\/32 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5997151 is a jobber length drill bit designed for general-purpose drilling in metal and hard materials. Built from high speed steel with a bright uncoated finish, it features a 135-degree split point and a parabolic spiral flute that promotes efficient chip evacuation and reduced walking on entry. The straight cylindrical shank measures 21\/32 inches in diameter, matching the drill body diameter for direct chuck mounting. This bit is sized at 21\/32 inches (0.6563 inches decimal) with an overall length of 7.125 inches and a flute length of 5.1875 inches, making it well suited for production drilling and maintenance work in trade and industrial settings.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is appropriate for use on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It follows the ANSI standard jobber length format and belongs to the QC21P series, which is rated for heavy duty general purpose drilling applications. Typical install scenarios include metalworking shops, mechanical contractors, and field service technicians drilling through structural steel, pipe flanges, or equipment housings. The 8xD flute-to-diameter ratio supports deeper hole applications within the rated maximum drilling depth of 5.1875 inches.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e21\/32 inch (0.6563 inch) diameter high speed steel construction for heavy duty use\u003c\/li\u003e\n  \u003cli\u003e135-degree split point reduces thrust and minimizes bit walk on hard surfaces\u003c\/li\u003e\n  \u003cli\u003eParabolic spiral flute with web thinning improves chip flow and reduces heat buildup\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank with zero flats for secure chuck grip\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut with tapered web configuration suited for steel, stainless, cast iron, and superalloys\u003c\/li\u003e\n  \u003cli\u003eANSI-compliant QC21P series rated for general purpose heavy duty drilling\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 3-jaw drill chucks and machine spindles accepting a 21\/32 inch straight cylindrical shank. Rated for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium per primary workpiece material codes P, M, K, N, and S.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists, mechanical contractors, or qualified maintenance technicians using a drill press, magnetic drill, or handheld electric drill with a compatible chuck. Always secure the workpiece and ensure the chuck is fully tightened on the shank before operation. Use appropriate cutting fluid when drilling stainless steel, superalloys, or other hard materials to extend bit life and manage heat. Inspect the cutting edges for wear before each use and replace 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: 21\/32 inches (0.6563 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 5.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 21\/32 inches (0.6563 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.9375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 5.1875 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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Parabolic Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered with Web Thinning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eSeries\u003c\/strong\u003e: QC21P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\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\u003eWeight\u003c\/strong\u003e: 0.5 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: 5997151\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51690282385714,"sku":"5997151","price":78.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/14c3de90969c6378087aaa7d157a7434_1b8d7518-6605-492c-8229-bc4941294158.jpg?v=1788268105","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997151-jobber-drill-bit-21-32-in","provider":"Voomi Supply","version":"1.0","type":"link"}