{"product_id":"precision-twist-drill-5997666-jobber-drill-bit-no-8","title":"Precision Twist Drill 5997666 Jobber Drill Bit No. 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5997666 is a jobber-length twist drill bit in wire gauge size No. 8, equivalent to 0.1990 inches in decimal. It is manufactured from high speed steel with a steam oxide coating that reduces friction and provides basic corrosion resistance during storage and use. The 135-degree split point reduces the tendency to walk on entry and requires no center punch on most metals. With an overall length of 3.625 inches and a spiral flute length of 2.4375 inches, this bit handles general-purpose drilling tasks in a wide range of shop and field applications. Licensed machinists, maintenance technicians, and pipefitters are the typical end users.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is designed for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It is suited for production drilling environments as well as maintenance and repair work on mechanical equipment. The regular spiral flute and web-thinned, tapered web geometry aid chip evacuation in deep-hole conditions up to the maximum drilling depth of 2.4375 inches. The straight cylindrical shank fits standard three-jaw chucks on drill presses, hand drills, and milling machine spindles without an adapter.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWire gauge No. 8 diameter — 0.1990 inches decimal equivalent\u003c\/li\u003e\n  \u003cli\u003e135-degree standard point angle with web thinning for reduced thrust and clean entry\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction rated for heavy-duty general-purpose use\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating provides lubricity and light corrosion protection\u003c\/li\u003e\n  \u003cli\u003eSpiral flute with tapered web design promotes efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI standards and NAS 907 specification designation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct equivalent for wire gauge No. 8 jobber-length drill bits in Series R10B, R15B, and R18B from PRECISION TWIST DRILL. Fits any standard three-jaw chuck accepting a 0.1990-inch straight cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit should be installed by a qualified machinist or maintenance technician familiar with rotating cutting tools. Secure the straight shank fully in the chuck and verify runout before beginning a cut. Always power down and lock out the machine spindle before changing bits. Use appropriate cutting fluid or coolant for stainless steel and superalloy materials to extend tool life, as coolant-through is not supported on this bit.\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. 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1990 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\u003eDrill Bit Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.625 inches (3-5\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.4375 inches (2-7\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.4375 inches (2-7\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1990 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.1875 inches (1-3\/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\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 12xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metal, Superalloys and Titanium, Hard Material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose, Heavy Duty Grade\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: R10B, R15B, R18B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.18 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: 5997666\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51710706450738,"sku":"5997666","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7da465a3340ea6a9db91bc6a63822e95_218037da-d3a3-4196-9282-d35c9b609dfa.jpg?v=1788469773","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997666-jobber-drill-bit-no-8","provider":"Voomi Supply","version":"1.0","type":"link"}