{"product_id":"precision-twist-drill-5999689-cobalt-jobber-drill-1-90mm","title":"Precision Twist Drill 5999689 Cobalt Jobber Drill 1.90mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5999689 is a cobalt high-speed steel jobber-length drill bit engineered for general-purpose drilling in steel and other demanding workpiece materials. Built to DIN 338 and ANSI standards, it features a 135-degree split point with web thinning for reduced thrust and self-centering entry without a center punch. The 1.90 mm diameter straight shank and regular spiral flute geometry make it a reliable choice for production environments and tool rooms where consistent hole quality and bit longevity in ferrous materials are priorities. The oxide and straw finish reduces friction and provides basic corrosion resistance during storage and use.\u003c\/p\u003e\u003cp\u003eThis bit is suited for drilling steel, cast iron, non-ferrous metals, and similar materials in both light-duty shop work and heavier production drilling applications. The 12xD flute-to-diameter ratio and tapered web configuration support chip evacuation in through-hole and shallow blind-hole operations. It is commonly used by machinists, tool-and-die workers, and maintenance technicians working with drill presses, CNC machines, and hand-held power drills requiring a straight-shank bit in the sub-2 mm range.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt HSS construction for improved heat resistance and extended tool life in steel and hard alloys\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web thinning reduces walking and lowers required feed force\u003c\/li\u003e\n\u003cli\u003eDIN 338 and ANSI compliant jobber-length geometry for consistent fitment in standard chucks\u003c\/li\u003e\n\u003cli\u003eOxide and straw coating reduces friction and provides surface protection\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting, regular spiral flute for efficient chip removal\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank compatible with standard drill chucks and collets\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose jobber drill bit for use in standard drill chucks and collets accepting a 1.90 mm straight cylindrical shank, suitable for workpiece materials coded P, M, K, N, and S per ISO material classification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with proper chuck tightening and feed-rate selection for small-diameter bits. Secure the shank fully in the chuck before operation to prevent runout and bit breakage. At sub-2 mm diameters, excessive feed pressure is the primary cause of breakage — use appropriate low-feed settings and cutting fluid where the workpiece material warrants it. Inspect the cutting edges for chipping before each use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 1.90 mm (0.0748 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1-13\/16 inches (46.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 55\/64 inches (22.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.90 mm (0.0748 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 0.9449 inches (24 mm)\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 Split Point, Web-Thinned\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\u003eSpiral Type\u003c\/strong\u003e: Regular\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\u003eMaterial\u003c\/strong\u003e: Cobalt High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide \/ Straw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (ISO Codes P, M, K, N, S)\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\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\u003eTool Performance\u003c\/strong\u003e: General Purpose, Heavy Duty Grade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04167 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: 5999689\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51718260261170,"sku":"5999689","price":63.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/758de141a9fc20af5d344d75acdd3f69_56e8f381-c80e-47cb-8131-211b7be39667.jpg?v=1788551280","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5999689-cobalt-jobber-drill-1-90mm","provider":"Voomi Supply","version":"1.0","type":"link"}