Osg 215-1181 Screw Machine Drill Bit 3mm Carbide

Product Description

The OSG 215-1181 is a screw machine length drill bit engineered for precision drilling in demanding industrial and metalworking applications. Built from solid carbide, this bit delivers the rigidity and wear resistance needed for consistent, accurate hole-making in tough materials. The 135-degree split point reduces walking and cutting force at entry, while the web-thinned, tapered web configuration improves chip evacuation and reduces thrust. At 3 mm in diameter with an overall length of 48 mm, it is sized for close-clearance and confined-space drilling where standard jobber-length bits are impractical. Machinists, tool-and-die technicians, and CNC operators are the primary users of this type of tooling.

This drill bit is well suited for production drilling in ferrous and non-ferrous metals including steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloys. The screw machine length form factor makes it a practical choice for turret lathes, screw machines, and CNC machining centers where tool overhang and deflection must be minimized. It is a general-purpose geometry intended for shops running moderate to high cutting speeds on a range of workpiece materials.

Key Features

• Solid carbide construction for superior rigidity and wear resistance compared to high-speed steel
• 135-degree standard split point reduces drill walking and lowers entry thrust force
• Web-thinned tapered web promotes efficient chip evacuation and reduces heat buildup
• Slow spiral, 2-flute design with a 5xD flute-to-diameter ratio optimized for short-length drilling
• Straight-cylindrical shank fits standard drill chucks and collet systems without modification
• Bright uncoated finish allows direct inspection of tool condition and edge wear

Compatibility

Designed as a general-purpose replacement or production drill bit for screw machines, CNC lathes, and machining centers requiring a 3 mm straight-shank carbide drill in the screw machine length format. Compatible workpiece materials include steel, alloy steel, stainless steel, cast iron, aluminum silicate, nickel alloy, titanium, and titanium alloys as specified by the manufacturer.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and locked out before inserting or changing tooling. Seat the straight-cylindrical shank fully into the collet or drill chuck and verify runout before beginning a cut. Follow the machine manufacturer and tooling manufacturer guidelines for recommended speeds and feeds; solid carbide tooling is brittle and susceptible to breakage if feeds are excessive or the workpiece is not properly fixtured.