Osg 8595373 Screw Machine Drill Bit 0.147 in Hss

Product Description

The OSG 8595373 is a screw machine length drill bit engineered for high-performance drilling in steel, stainless steel, aluminum, and aluminum alloys. Built from high speed steel with a coated finish, this bit features a 130-degree faceted drill point and a web-thinned, tapered web configuration that reduces thrust and improves centering. The right-hand spiral flute design promotes efficient chip evacuation. At 0.147 inches (wire size 26) in diameter, the short screw machine length provides added rigidity compared to jobber-length bits, making it well suited for precision drilling in tight spaces or on screw machine setups.

This drill bit is intended for use in metalworking applications where close-tolerance, high-cycle drilling is required. Its 5xD flute-to-diameter ratio and stub-length profile make it a practical choice for production environments including CNC machining centers, turret lathes, and manual drill press work on ferrous and non-ferrous stock. Machinists and tool-and-die professionals working with steel and aluminum will find the web-thinned point especially useful for starting holes cleanly without a center punch on softer materials.

Key Features

• Wire size 26 diameter: 0.147 inches with a tolerance of +0 to -0.0007 inches
• 130-degree faceted drill point for aggressive cutting on steel and stainless steel
• Web-thinned, tapered web reduces entry thrust and improves hole quality
• High speed steel construction with coated finish for extended tool life
• Screw machine (stub) length adds rigidity and reduces deflection
• Right-hand cut, regular spiral flute for consistent chip removal

Compatibility

Designed for use in standard straight-shank drill chucks. Compatible with primary workpiece materials including steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. Part of the OSG Series 1100 high-performance drill line.

Installation Notes

Install in a properly sized straight-shank drill chuck and confirm the chuck is fully tightened before operation. Ensure the workpiece is securely clamped before drilling. This bit does not support coolant-through operation, so apply cutting fluid externally when drilling steel or stainless steel to manage heat. Follow applicable machine shop safety procedures and equipment manufacturer guidelines for spindle speeds and feed rates appropriate to the workpiece material.