{"product_id":"precision-twist-drill-5997749-no-54-cobalt-jobber-drill-bit","title":"Precision Twist Drill 5997749 No. 54 Cobalt Jobber Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5997749 is a No. 54 wire-gauge jobber-length drill bit designed for precision hole-making in ferrous and non-ferrous metals. Built from cobalt high-speed steel with a straw oxide finish, it delivers extended tool life in demanding drilling applications. The 135-degree split point reduces walking at entry and requires less feed pressure compared to a conventional 118-degree point. At 1.875 inches overall length with a 0.875-inch flute, this bit suits tight-clearance drilling in production and MRO environments. Licensed machinists, tool-and-die technicians, and maintenance mechanics are the typical end users.\u003c\/p\u003e\u003cp\u003eThis bit is rated for general-purpose drilling in steel, cast iron, aluminum, and a range of engineered materials, consistent with its P, M, K, N, and S workpiece material codes. The straight cylindrical shank accepts standard drill chucks without adapter hardware, making it compatible with bench-top drill presses, CNC machining centers, and handheld drill drivers. The web-thinned, tapered web configuration improves chip evacuation and reduces thrust force on through-hole and blind-hole work in production settings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 54 wire size, 0.0550-inch decimal diameter for tight-tolerance hole applications\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces drill walk and lowers required feed pressure\u003c\/li\u003e\n\u003cli\u003eCobalt HSS construction provides heat resistance beyond standard M2 high-speed steel\u003c\/li\u003e\n\u003cli\u003eStraw oxide finish reduces friction and provides light corrosion resistance during storage\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web improves chip flow and reduces thrust in deep drilling passes\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, regular spiral flute compatible with standard drill chucks and spindles\u003c\/li\u003e\n\u003cli\u003eMeets ANSI and NAS 907 specifications for jobber-length drill geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003ePart of the R10CO-R15CO-R18CO series. Designed as an OEM-style replacement or direct substitute for wire-gauge No. 54 jobber drill bits used in general machining, production drilling, and MRO maintenance operations on steel and multi-material workpieces.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a standard keyed or keyless drill chuck rated for the shank diameter. Secure the shank fully in the chuck before applying power to the spindle. Inspect the cutting edges and web for wear or chipping before each use, and replace the bit if the point geometry is compromised to avoid workpiece damage or breakage. Follow shop-specific speeds and feeds for cobalt tooling when drilling hardened or stainless steel materials.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 54\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0550 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\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: 1.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.0550 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.000 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: 16xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (P, M, K, N, S material codes)\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\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: 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: 5997749\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51711793955122,"sku":"5997749","price":59.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fd6336b34c1d0261f5eb3b4d3e77059f_c1fc8d34-ee52-4781-902e-8fdc831a01ce.jpg?v=1788479651","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5997749-no-54-cobalt-jobber-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}