Osg 8608422 Screw Machine Drill Bit 0.166 in Wire 19

Product Description

The OSG 8608422 is a screw machine length drill bit engineered for high-performance drilling in ferrous metals and hard alloys. It features an XPM high-performance coating applied to a two-flute, right-hand spiral configuration with a 130-degree drill point angle optimized for aggressive entry and clean chip evacuation. The straight-cylindrical shank measures 6.00 millimeters in diameter, and the overall tool length is 66.00 millimeters, keeping the setup compact and rigid for stub-length applications. R-thinned web geometry reduces thrust load at the point and extends tool life in production environments. This bit is suited for machinists, tool-and-die workers, and metal fabricators running drill press, CNC, or manual lathe operations.

This screw machine drill bit is built for drilling steel, alloy steel, cast iron, and nickel alloys in both job-shop and production floor settings. The 3xD flute-to-diameter ratio and tapered web configuration make it well suited for short-hole drilling where rigidity and repeatability matter. The compact screw machine length reduces deflection compared to jobber-length alternatives, making it a practical choice for tight-tolerance work in fixture-mounted or turret setups. No coolant-through capability is required for typical applications within its intended workpiece material range.

Key Features

• XPM high-performance coating for extended tool life in ferrous and nickel alloy materials
• 130-degree drill point angle for aggressive entry and reduced thrust on hard workpieces
• R-thinned web configuration reduces cutting force and improves point stability
• Screw machine (stub) length provides maximum rigidity and minimal deflection
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collets

Compatibility

Designed for drilling steel, alloy steel, cast iron, and nickel alloy workpieces. Part of the OSG Series 1900 high-performance screw machine drill line, covering the decimal inch size range of 0.1500 to 0.2000 inches.

Installation Notes

Installation and use should be performed by qualified machinists or metal fabrication professionals. Secure the shank fully in a properly sized drill chuck or collet before operation, and confirm the workpiece is clamped or fixtured to prevent movement. Power down and de-energize all equipment before changing tooling. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed selection based on workpiece material.