{"product_id":"precision-twist-drill-5998168-cobalt-jobber-drill-27-64-in","title":"Precision Twist Drill 5998168 Cobalt Jobber Drill 27\/64 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5998168 is a cobalt high-speed steel jobber-length drill bit designed for drilling into steel and other demanding workpiece materials. It features a 135-degree split point and a web-thinned, tapered web configuration that reduces walking and lowers thrust requirements at the start of the cut. The straw oxide finish provides mild lubricity and corrosion resistance during storage and use. At 5.375 inches overall length with a 3.9375-inch flute, this bit fits standard drill chucks via its straight cylindrical shank. It is intended for general-purpose heavy-duty production and maintenance drilling.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for metal fabrication shops, maintenance and repair operations, and field work where steel, cast iron, non-ferrous metals, and high-temperature alloys are encountered. Its 9xD flute-to-diameter ratio makes it appropriate for through-holes and deeper passes in a standard drill press, magnetic drill, or handheld drill motor. The right-hand cutting direction is standard for conventional drilling operations. The series R10CO-R15CO-R18CO designation covers this cobalt jobber line across multiple diameter ranges. Primary workpiece material codes P, M, K, N, and S indicate suitability for steel, stainless, cast iron, non-ferrous, and heat-resistant alloys.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt high-speed steel construction for increased heat and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with web thinning reduces thrust and minimizes bit walking on entry\u003c\/li\u003e\n  \u003cli\u003eStraw oxide finish provides surface lubricity and corrosion protection\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 0.4219 inches diameter fits standard drill chucks without adapters\u003c\/li\u003e\n  \u003cli\u003eRegular spiral, 2-flute design promotes chip evacuation in steel and similar materials\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI and NAS 907 standards for jobber-length drill geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003ePart of the PRECISION TWIST DRILL Series R10CO-R15CO-R18CO cobalt jobber line. Compatible with any standard drill press, magnetic base drill, or handheld drill motor that accepts a straight-shank bit in the 27\/64-inch diameter range. Suitable for use on steel, stainless steel, cast iron, non-ferrous metals, and heat-resistant alloys as indicated by workpiece material codes P, M, K, N, and S.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and operated by machinists, tool-and-die technicians, HVAC and plumbing tradespeople, and general maintenance mechanics. Secure the shank fully in the drill chuck before operation and confirm the chuck key is removed before starting the machine. Use cutting fluid or oil when drilling steel to extend tool life and maintain hole quality. Inspect the cutting edges for wear or chipping before each use and replace the bit when point geometry is degraded to avoid workpiece damage or bit breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 27\/64 inches (0.4219 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw 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, Web-Thinned\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: 5.375 inches (5-3\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.9375 inches (3-15\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 3.9375 inches (3-15\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.4219 inches (27\/64 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.4375 inches (1-7\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 9xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (Codes P, M, K, N, S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose, Heavy Duty\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08333 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: 5998168\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51720723628338,"sku":"5998168","price":35.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/48612cbca6d09eb9dfe2c82cf07b8e8a_01ace785-73f3-49cd-a6b1-435132aef6b5.jpg?v=1788568253","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5998168-cobalt-jobber-drill-27-64-in","provider":"Voomi Supply","version":"1.0","type":"link"}