{"product_id":"precision-twist-drill-5999686-cobalt-jobber-drill-1-85mm","title":"Precision Twist Drill 5999686 Cobalt Jobber Drill 1.85mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5999686 is a cobalt high-speed steel jobber-length drill bit designed for drilling operations in steel and other demanding workpiece materials. It measures 1.85 mm (0.0728 inches) in diameter with an overall length of 1-13\/16 inches (1.8125 inches) and a flute length of 55\/64 inches (0.8594 inches). The 135-degree split point reduces walking and lowers the thrust required to start a hole without a center punch. The oxide and straw finish provides mild lubricity and corrosion resistance during use. This is a general-purpose heavy-duty bit suited for production and maintenance drilling by machinists, tool-and-die technicians, and industrial maintenance trades.\u003c\/p\u003e\n\u003cp\u003eThis bit is built for drilling steel and compatible with workpiece material codes P, M, K, N, and S per DIN classification, covering a broad range of ferrous and non-ferrous materials. The Series 2ACO designation follows DIN 338 and ANSI standards, making it a direct fit for standard jobber-drill applications in drill presses, CNC machining centers, and hand-held power drills where a straight-shank bit is required. The 12xD flute-to-diameter ratio provides adequate chip evacuation at this small diameter. Typical applications include through-hole and blind-hole drilling in steel plate, structural components, and machined parts.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction for improved heat and wear resistance over standard HSS in steel drilling\u003c\/li\u003e\n  \u003cli\u003e135-degree web-thinned split point reduces thrust and self-centers on the workpiece\u003c\/li\u003e\n  \u003cli\u003eOxide and straw coating adds surface lubricity and mild corrosion protection\u003c\/li\u003e\n  \u003cli\u003eRegular spiral flute with tapered web configuration promotes efficient chip removal\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 1.85 mm (0.0728 inches) fits standard drill chucks without modification\u003c\/li\u003e\n  \u003cli\u003eMeets DIN 338 and ANSI standards for consistent dimensional accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose jobber drill compatible with workpiece materials classified under DIN codes P (steel), M (stainless), K (cast iron), N (non-ferrous), and S (heat-resistant alloys). Fits any standard drill chuck accepting a 1.85 mm straight shank. Conforms to DIN 338 and ANSI specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of this drill bit is performed by machinists, maintenance technicians, or qualified tradespeople using a drill press, hand drill, or CNC spindle with an appropriate collet or keyed chuck. Secure the workpiece firmly before drilling to prevent movement at this small diameter. At 1.85 mm, the bit is susceptible to breakage under side-loading or excessive feed pressure — use consistent, controlled feed rates and appropriate cutting fluid on steel. Inspect the cutting edges before each use and replace if chipping or dulling is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1.85 mm (0.0728 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-13\/16 inches (1.8125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 55\/64 inches (0.8594 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.85 mm (0.0728 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 24 mm (0.9449 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.8661 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\u003ePoint Type\u003c\/strong\u003e: Standard web-thinned split point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide and straw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt\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\u003eSpecification\u003c\/strong\u003e: DIN 338, ANSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2ACO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 12xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble Margin\u003c\/strong\u003e: No\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\u003eWeight\u003c\/strong\u003e: 0.042 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: 5999686\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51695007596850,"sku":"5999686","price":62.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/758de141a9fc20af5d344d75acdd3f69_c64fa0d8-44e8-43fa-83fa-33d43740dea5.jpg?v=1788330447","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999686-cobalt-jobber-drill-1-85mm","provider":"Voomi Supply","version":"1.0","type":"link"}