{"product_id":"precision-twist-drill-5997816-cobalt-jobber-drill-bit","title":"Precision Twist Drill 5997816 Cobalt Jobber Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5997816 is a wire gauge size 71 cobalt jobber-length drill bit designed for drilling operations in ferrous and non-ferrous metals, stainless steel, and high-strength alloys. Ground to a 135-degree split point with web thinning, it starts on contact without a center punch and reduces walking on hard surfaces. The straight cylindrical shank measures 0.0260 inches in diameter and fits standard keyless or keyed drill chucks. A straw oxide finish provides mild lubricity and heat resistance during high-speed drilling. At 1.25 inches overall length with a 0.375-inch flute, this bit suits tight-clearance drilling in confined assemblies or thin stock.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for general-purpose production drilling in machine shops, maintenance environments, and light manufacturing. It performs in steel, cast iron, aluminum, plastics, and exotic alloys, covering workpiece material codes P, M, K, N, and S. The 14xD flute-to-diameter ratio and regular spiral flute geometry promote chip evacuation in short-depth holes. Typical applications include fixture drilling, sheet metal work, and precision hole placement where small-diameter accuracy matters. Licensed machinists, tool and die technicians, and maintenance mechanics are the primary installers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWire size 71 diameter: 0.0260 inches for precision small-bore drilling\u003c\/li\u003e\n  \u003cli\u003e135-degree standard split point with web thinning for self-centering entry\u003c\/li\u003e\n  \u003cli\u003eCobalt high-speed steel construction rated for heavy-duty cutting in hard materials\u003c\/li\u003e\n  \u003cli\u003eStraw oxide coating adds lubricity and reduces heat buildup at the cutting edge\u003c\/li\u003e\n  \u003cli\u003eRegular spiral, 2-flute geometry promotes clean chip evacuation in short-depth holes\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and NAS 907 standards for dimensional and performance consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003ePart of the R10CO-R15CO-R18CO series. Designed as a general-purpose jobber drill compatible with standard straight-shank drill chucks accepting shanks at 0.0260 inches diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a drill press, CNC machining center, or hand drill with a compatible chuck. Secure the shank fully in the chuck before operation and verify spindle speed matches recommended surface footage for the workpiece material. Do not use excessive feed pressure on small-diameter cobalt bits, as lateral stress can cause breakage. Cutting fluid or lubricant is recommended when drilling steel or stainless alloys to extend edge life.\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: 71\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0260 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\u003ePoint Type\u003c\/strong\u003e: Standard Split Point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned, Tapered Web\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/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\u003eOverall Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0260 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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 14xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (P, M, K, N, S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R10CO-R15CO-R18CO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Heavy Duty\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: 5997816\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51691729289522,"sku":"5997816","price":79.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fd6336b34c1d0261f5eb3b4d3e77059f_72188b5a-0db6-4c39-9b5d-2f035efb2f69.jpg?v=1788288916","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997816-cobalt-jobber-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}