{"product_id":"osg-10191005-screw-machine-drill-bit-no-11-cobalt-hss","title":"Osg 10191005 Screw Machine Drill Bit No. 11 Cobalt Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 10191005 is a screw machine length (stub length) drill bit designed for high-performance drilling in steel and alloy steel. It is ground from cobalt high speed steel and coated with titanium nitride (TiN) for extended tool life and heat resistance. The bit features a 130-degree point angle with R-thinned web geometry, which reduces thrust force and improves chip evacuation at the cutting tip. Overall length is 3 inches with a flute length of 1-3\/16 inches, making it well suited for use in tight spaces, turret lathes, screw machines, and CNC drilling operations. Diameter is 0.191 inches (No. 11 wire size) with a 0.25-inch straight cylindrical shank.\u003c\/p\u003e\u003cp\u003eThis drill bit is intended for production drilling environments where short, rigid tooling is required. It is commonly used in metalworking shops, maintenance and repair operations, and manufacturing cells drilling mild steel, carbon steel, and alloy steel workpieces. The screw machine length configuration minimizes deflection, making it a reliable choice for repeat-hole drilling on CNC machining centers, drill presses, and manual turret equipment. The 2-flute spiral design with tapered web and 3xD flute-to-diameter ratio supports consistent chip clearing in ferrous materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt high speed steel construction for improved heat and wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eTitanium nitride (TiN) coating extends cutting edge life in steel and alloy steel applications\u003c\/li\u003e\n\u003cli\u003e130-degree point angle with R-thinned web reduces entry thrust and walking\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length body increases rigidity and reduces deflection\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard drill chucks and collets\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, 2-flute spiral design with tapered web for consistent chip flow\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or production tooling option for screw machine length drill bit applications in metalworking operations requiring a No. 11 wire size (0.191 inch) cobalt HSS drill with a 0.25-inch straight shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists and tooling technicians in machine shop or production environments. Secure the shank fully in the chuck or collet before operation and verify runout before beginning production runs. Ensure spindle speed and feed rate are set according to established speeds-and-feeds tables for cobalt HSS tooling in the target material. Inspect the cutting edges for wear regularly; do not use a chipped or worn bit, as this increases the risk of workpiece damage and tool breakage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (Decimal Inch)\u003c\/strong\u003e: 0.1910 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter (mm)\u003c\/strong\u003e: 4.85 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches (76.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-3\/16 inches (30.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: R-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0 to -0.018 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 1000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 10191005\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51752679538994,"sku":"10191005","price":48.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/529a02c582e209cb7c5c63bbeebbad14_6efc6147-391e-466f-9aad-5ca4c784d0ae.jpg?v=1788929714","url":"https:\/\/voomisupply.com\/products\/osg-10191005-screw-machine-drill-bit-no-11-cobalt-hss","provider":"Voomi Supply","version":"1.0","type":"link"}