Osg 8595162 Screw Machine Drill Bit 0.0638 in Hss

Product Description

The OSG 8595162 is a screw machine length drill bit designed for high-performance drilling in metal fabrication and machining applications. It measures 0.0638 inches (1.62 mm) in diameter with an overall length of approximately 1.65 inches (42.00 mm) and a flute length of approximately 0.39 inches (10.00 mm). Constructed from high speed steel with a coated finish, this bit features a 140-degree faceted drill point and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. Two spiral flutes in a regular helix pattern handle cutting loads efficiently across a range of workpiece materials.

This drill bit is suited for screw machine operations and short-hole drilling tasks where a compact, stub-length tool improves rigidity and reduces deflection. The straight-cylindrical shank with a 3.00 mm (approximately 0.118 inch) diameter fits standard drill chucks and collets used in CNC machining centers, manual drill presses, and turret lathes. It is appropriate for production shops, tool rooms, and maintenance environments where small-diameter precision drilling is required.

Key Features

• 0.0638 inch (1.62 mm) diameter with a tolerance of +0 to -0.014 mm for consistent hole sizing
• 140-degree faceted point reduces walking and improves self-centering on entry
• Web-thinned, tapered web lowers drilling thrust and extends tool life
• High speed steel construction with coated finish for improved wear resistance
• Screw machine (stub) length provides added rigidity in short-hole drilling setups
• Right-hand cut with two regular spiral flutes for efficient chip removal

Compatibility

OSG Series 1100 screw machine length drill bits are rated for use in steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpiece materials. Verify spindle speed and feed rate against OSG Series 1100 cutting data for the specific workpiece material before use.

Installation Notes

This bit is installed and removed by machinists or tool setters using a standard drill chuck or collet sized to the 3.00 mm shank diameter. Ensure the machine spindle is fully stopped and power is isolated before changing tooling. Follow shop-standard speeds and feeds for small-diameter HSS tooling in the target material. Avoid side loading or angular entry, which can cause bit breakage at this diameter.