{"product_id":"osg-8691090-carbide-screw-machine-drill-bit-0-4291-in","title":"Osg 8691090 Carbide Screw Machine Drill Bit 0.4291 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 8691090 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding industrial and metalworking applications. Built to Series 6500 standards, it features a 0.4291-inch (10.90 mm) diameter, a 140-degree split point, and a coated finish for extended tool life and reduced heat buildup. The right-hand spiral flute geometry, combined with R-thinned web configuration, promotes efficient chip evacuation and reduced thrust force at entry. Coolant-through capability makes it well-suited for deep-hole operations in production environments. Licensed machinists, tool-and-die makers, and CNC operators are the primary users of this bit.\u003c\/p\u003e\u003cp\u003eThis drill bit is engineered for use on ferrous and high-strength workpiece materials including steel, alloy steel, cast iron, titanium, and titanium alloys. The screw machine length profile — shorter overall length compared to jobber bits — provides increased rigidity and accuracy, making it a preferred choice for turret lathes, screw machines, and CNC machining centers where overhang and deflection must be minimized. The 3xD flute-to-diameter ratio supports controlled chip flow during continuous cutting cycles.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for superior hardness and wear resistance in ferrous and titanium workpiece materials\u003c\/li\u003e\n\u003cli\u003e140-degree drill point angle with R-thinned web for reduced entry thrust and accurate self-centering\u003c\/li\u003e\n\u003cli\u003eCoated finish extends tool life and reduces built-up edge in high-speed applications\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports deep-hole drilling and chip flushing in production environments\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank (11.00 mm) compatible with standard collets and drill chucks\u003c\/li\u003e\n\u003cli\u003eRegular spiral, 2-flute configuration promotes efficient chip evacuation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in screw machines, turret lathes, and CNC machining centers. Suitable for drilling steel, alloy steel, cast iron, titanium, and titanium alloys within the 0.4000 to 0.4500-inch (9.50 to 11.00 mm) diameter range. Part of the OSG Series 6500 high-performance drill line.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and operation should be performed by qualified machinists or CNC technicians familiar with tooling setup and safe machine operation. Ensure the machine spindle is fully stopped and de-energized before inserting or removing the bit from the tool holder. Verify that the collet or chuck bore matches the 11.00 mm shank diameter to ensure secure clamping and runout control. Always confirm coolant-through supply is properly connected and flowing before initiating deep-hole cycles.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.4291 inches (10.90 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\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: Spiral, Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 55.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 113.00 mm (approximately 4.45 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 11.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, R-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Steel, Alloy Steel, Cast Iron, Titanium, Titanium Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0 to -0.027 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 6500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.265 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 4.7 inches L x 0.7 inches W x 0.6 inches H\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: 8691090\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730007327026,"sku":"8691090","price":409.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8b46ad03ea5170bff9de3e121ee42436_5580e897-c0aa-40a1-953a-42585f43a338.jpg?v=1788710079","url":"https:\/\/voomisupply.com\/products\/osg-8691090-carbide-screw-machine-drill-bit-0-4291-in","provider":"Voomi Supply","version":"1.0","type":"link"}