Osg 8595104 Screw Machine Drill Bit 0.041 in Wire 59 Hss

Product Description

The OSG 8595104 is a screw machine length drill bit designed for precision drilling in tight-clearance and production machining environments. Built from high-speed steel with a coated finish, this bit features a 140-degree faceted point angle and a web-thinned, tapered web configuration that reduces entry force and improves chip evacuation. The right-hand spiral flute geometry and compact screw machine length make it well-suited for use in drill presses, CNC machining centers, and manual lathes where stub-length rigidity is required. Machinists and tooling specialists are the primary users of this style of bit.

This drill bit is intended for production and precision drilling operations across a range of common workpiece materials including steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. Its 0.041-inch diameter corresponds to wire gauge size 59, placing it in the small-diameter range used for tapping pre-drill holes, instrument component drilling, and fine-tolerance part fabrication. The screw machine length body provides greater stability and reduced deflection compared to jobber-length bits at this diameter.

Key Features

• Wire gauge size 59 (0.041 inches diameter) for precise small-hole applications
• 140-degree faceted drill point for reduced thrust and cleaner entry on hard materials
• High-speed steel construction with coated finish for wear resistance
• Web-thinned tapered web for improved chip clearance and lower feed force
• Screw machine length body provides rigidity and minimizes deflection at small diameters
• Right-hand cut, regular spiral flute geometry compatible with standard drill chucks

Compatibility

Designed as a screw machine length drill bit for use with standard straight-shank drill chucks across drill presses, CNC machining centers, and manual lathes where stub-length tooling is required. Suitable for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with small-diameter drill bit handling. Secure the straight-cylindrical shank firmly in a properly sized drill chuck before operation to prevent runout. At 0.041 inches diameter, feed rates and spindle speeds must be carefully controlled to avoid bit breakage. Inspect the cutting edges and point before each use and replace worn or chipped bits immediately.