Osg 8608253 Screw Machine Drill Bit 0.0995 in Xpm

Product Description

The OSG 8608253 is a screw machine length drill bit designed for high-performance drilling in steel, alloy steel, cast iron, and nickel alloy. It measures 0.0995 inches (wire gauge 39) in diameter with an overall length of approximately 1.81 inches (46 mm) and a flute length of approximately 0.55 inches (14 mm). The bit features an XPM high-speed steel construction with a coated finish and an X-Thinned web for reduced thrust and improved chip evacuation. The 130-degree split point is suited for self-starting entry without a center punch on most metals. This bit is installed by machinists, tool-and-die professionals, and precision metalworking tradespeople.

The OSG 8608253 is used in screw machine operations, CNC drilling, and bench drilling applications where short, rigid tooling is required for accurate hole placement in ferrous and nickel-based materials. The screw machine length geometry provides reduced deflection compared to jobber-length bits, making it well suited for close-tolerance production work on steel and alloy components. Primary workpiece materials include steel, alloy steel, cast iron, and nickel alloy.

Key Features

• XPM high-performance tool material with coated finish for extended tool life in ferrous metals
• 130-degree drill point angle for reduced thrust and self-centering entry
• X-Thinned tapered web reduces cutting resistance and improves chip flow
• Screw machine length (3xD flute-to-diameter ratio) for maximum rigidity and reduced deflection
• 2-flute regular spiral configuration with straight-cylindrical shank for standard chuck compatibility
• Right-hand cut with standard point type; no coolant-through required

Compatibility

Designed for use in standard drill chucks and screw machine spindles accepting a 3.00 mm (approximately 0.118 inches) straight-cylindrical shank; part of OSG Series 1900.

Installation Notes

Installation and use should be performed by qualified machinists or metalworking professionals. Secure the shank fully in a properly sized drill chuck before operation and verify chuck runout is within acceptable tolerance for the hole size being drilled. Power down and de-energize the machine before changing tooling. Follow applicable shop safety standards and machine manufacturer guidelines for spindle speed and feed rate selection based on workpiece material.