Osg 572012517 Screw Machine Drill Bit 1/8 Inch Carbide

Product Description

The OSG 572012517 is a screw machine length solid carbide drill bit designed for high-performance drilling in ferrous materials. Built to Series 5720 specifications, it features a 180-degree web-thinned point for accurate entry and reduced thrust. The EgiAs coating improves wear resistance and heat dissipation, extending tool life in demanding production environments. At 1/8 inch (3.17 mm) diameter with a 2.1654-inch overall length, this stub-length drill is suited for CNC machining centers, drill presses, and screw machine operations where rigidity and precision matter. Installation and operation are performed by machinists and tool-and-die professionals.

This drill bit is engineered for cutting steel, alloy steel, and cast iron. The screw machine length format — shorter than jobber length — reduces deflection and improves hole location accuracy, making it a practical choice for tight-tolerance applications in production machining. The 3xD flute-to-diameter ratio and regular spiral flute geometry promote chip evacuation in short-depth holes. Coolant-through capability supports high-speed spindle operations where heat management is critical.

Key Features

• 180-degree web-thinned point reduces entry thrust and improves centering accuracy
• EgiAs coating enhances wear resistance and tool life in ferrous materials
• Coolant-through design supports high-speed and high-feed machining operations
• Screw machine (stub) length provides added rigidity and reduced deflection versus jobber-length bits
• Straight-cylindrical shank fits standard drill chucks and collet systems
• Tapered web configuration with regular spiral flutes for consistent chip clearance

Compatibility

Designed for drilling steel, alloy steel, and cast iron workpieces. Fits standard straight-shank drill chucks and collet holders accepting 0.1250-inch shank diameters. Part of the OSG Series 5720 screw machine drill line.

Installation Notes

Installation and setup should be performed by qualified machinists familiar with cutting tool specifications. Ensure the spindle and workholding are fully stopped before changing tooling. Verify chuck or collet runout is within acceptable tolerances to avoid premature edge wear. When using coolant-through capability, confirm coolant lines are clear and pressure is appropriate for the spindle setup before starting the cut.