Osg 3331080 Screw Machine Drill Bit 10.8mm Solid Carbide

Product Description

The OSG 3331080 is a solid carbide screw machine length drill bit designed for high-performance drilling in steel, alloy steel, and cast iron. With a 10.8 mm diameter, a 180-degree point angle, and a web-thinned, tapered web configuration, this bit delivers precise entry and reduced thrust in demanding metal-cutting applications. The straight-cylindrical shank measures 1.00 mm in diameter, and the overall length is 90 mm (3.54 inches). Two spiral flutes with a 2xD flute-to-diameter ratio support efficient chip evacuation. The coated carbide construction is suited for production drilling environments where tool life and hole quality are critical.

This drill bit is built for use in screw machine operations and short-hole drilling applications across metalworking and machining environments. It is well-suited for drilling steel, alloy steel, and cast iron in both production shop and maintenance machining contexts. The screw machine length profile keeps the bit rigid and minimizes deflection in high-cycle drilling setups. Machinists and toolroom technicians working with CNC machining centers, drill presses, or screw machines will find this bit appropriate for tight-tolerance through-hole and blind-hole work.

Key Features

• Solid carbide construction for extended tool life in ferrous metal drilling
• 180-degree point angle with web-thinned, tapered web for reduced entry thrust
• 10.8 mm drill diameter with tolerance of +0 to -0.027 mm for consistent hole sizing
• 2-flute spiral design with 46 mm flute length for effective chip removal
• Screw machine length (2xD flute ratio) maximizes rigidity and minimizes runout
• Right-hand cut, straight-cylindrical shank for standard chuck compatibility

Compatibility

Designed for use in standard drill chucks and collet holders accepting a 1.00 mm straight-cylindrical shank. Primary workpiece materials listed by the manufacturer are steel, alloy steel, and cast iron. Part of the OSG Series 5700 high-performance drill line.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists familiar with carbide tooling. Secure the shank fully in the chuck or collet before operation and verify runout with a dial indicator where tolerances are critical. Carbide is brittle — avoid side loads, interrupted cuts without proper setup, and impact from hand-tool use. Follow machine manufacturer speeds and feeds guidelines for solid carbide drills in the target workpiece material.