{"product_id":"osg-215-2570-screw-machine-drill-bit-0-257-in-carbide","title":"Osg 215-2570 Screw Machine Drill Bit 0.257 in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 215-2570 is a screw machine length solid carbide drill bit designed for high-precision hole-making in demanding industrial and machining applications. Sized at 0.257 inches (Letter F, 6.53 mm) in diameter with a 135-degree split point and web-thinned geometry, this bit starts accurately without a center punch and reduces thrust at entry. The straight-cylindrical shank fits standard drill chucks and collet holders. With an overall length of 2-5\/8 inches and a flute length of 1-7\/16 inches, the compact screw machine length profile provides added rigidity in CNC drilling, turret lathes, and screw machine setups where shorter overhang matters.\u003c\/p\u003e\u003cp\u003eThis bit is suited for production machining environments handling steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloys. The slow spiral flute geometry and solid carbide construction make it appropriate for materials that demand edge integrity and consistent chip evacuation at elevated cutting speeds. Machinists, toolroom technicians, and production operators working on precision components will find this bit appropriate for repeatable, close-tolerance drilling where bit deflection must be minimized.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and edge retention in hard and abrasive workpiece materials\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web thinning reduces entry thrust and improves self-centering\u003c\/li\u003e\n\u003cli\u003eSlow spiral flute geometry promotes controlled chip flow in difficult-to-machine alloys\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish for use across a broad range of workpiece materials without coating compatibility concerns\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length provides added stiffness and reduced runout compared to jobber-length bits\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, 2-flute design compatible with standard CNC and manual drill setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloys as primary workpiece materials. Fits any machine spindle or collet accepting a straight-cylindrical shank at the 0.257-inch diameter. Part of the OSG Series 215 general-purpose carbide drill line with a flute-by-diameter ratio of 5xD.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed with the machine fully powered down and the spindle locked. Secure the straight-cylindrical shank in a properly sized collet or drill chuck to the tool manufacturer-recommended retention depth before operation. Verify spindle speed and feed rate against material-specific cutting data for solid carbide tooling before running. Coolant-through is not supported on this bit; apply flood or mist coolant externally where required by the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.257 inches (Letter F \/ 6.53 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-7\/16 inches (36.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 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: Slow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: Bright\/Uncoated\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 -0.013 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 215\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.061 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: 215-2570\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727262712114,"sku":"215-2570","price":78.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0f73dba7a9463ed483266edd4048093.jpg?v=1788675620","url":"https:\/\/voomisupply.com\/products\/osg-215-2570-screw-machine-drill-bit-0-257-in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}