{"product_id":"precision-twist-drill-5997791-cobalt-jobber-drill-bit-65","title":"Precision Twist Drill 5997791 Cobalt Jobber Drill Bit 65","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5997791 is a cobalt jobber-length drill bit in wire gauge size 65, equivalent to 0.0350 inches in decimal. It features a 135-degree split point with web thinning, which reduces walking on entry and lowers the thrust force needed to start the hole. The straw oxide finish provides mild lubricity and heat resistance during high-speed drilling operations. At 1.5 inches overall length with a 0.625-inch flute length, this is a compact drill designed for small-diameter precision work. It carries NAS 907 and ANSI standards compliance and is classed as a heavy-duty, general-purpose tool suited to machine shop, MRO, and production environments.\u003c\/p\u003e\u003cp\u003eThis drill bit is intended for drilling operations in steel and a broad range of workpiece materials including ferrous metals, non-ferrous metals, cast materials, and certain superalloys, consistent with its P, M, K, N, and S material group ratings. The straight cylindrical shank fits standard drill chucks in bench drills, drill presses, and CNC machining centers. Its 18xD flute-to-diameter ratio and two-flute regular spiral geometry make it well suited for through-hole and blind-hole drilling in thin stock and small components where tight diameter tolerances are critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire gauge size 65 (0.0350 inches) cobalt construction for improved hardness and heat resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web thinning for self-centering entry and reduced thrust\u003c\/li\u003e\n\u003cli\u003eStraw oxide coating provides lubricity and mild corrosion resistance\u003c\/li\u003e\n\u003cli\u003eTwo-flute regular spiral geometry with tapered web for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eNAS 907 and ANSI standards compliance for quality assurance in precision applications\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank with zero flats for universal chuck compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eBelongs to the R10CO-R15CO-R18CO series. Designed as an OEM-style jobber drill replacement for any standard drill chuck accepting a 0.0350-inch straight shank in production, MRO, or machine shop use.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstalled by machinists, toolroom technicians, or maintenance professionals using any drill press, CNC machining center, or hand drill with a chuck capable of holding a 0.0350-inch straight shank. Secure the shank fully in the chuck before operation and verify runout when accuracy is critical. Follow shop safety protocols including eye protection and appropriate spindle speeds for cobalt bits in the target workpiece material. Do not use this bit for coolant-through applications as coolant-through capability is not supported on this part.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 65\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0350 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating and Finish\u003c\/strong\u003e: Straw Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\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\u003ePoint Type\u003c\/strong\u003e: Standard with Web Thinning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0350 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flats\u003c\/strong\u003e: 0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 18xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel and multi-material (P, M, K, N, S codes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NAS 907, ANSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R10CO-R15CO-R18CO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 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: 5997791\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51697640472882,"sku":"5997791","price":71.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fd6336b34c1d0261f5eb3b4d3e77059f_5591ab85-862c-47b5-b0ae-313a1499538d.jpg?v=1788353709","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997791-cobalt-jobber-drill-bit-65","provider":"Voomi Supply","version":"1.0","type":"link"}