Osg 8595975 Screw Machine Drill Bit 0.3839 in Hss

Product Description

The OSG 8595975 is a screw machine length drill bit designed for high-performance metal drilling in tight-clearance and production environments. Built from high speed steel with a coated finish, this bit features a 120-degree faceted point angle and a web-thinned, tapered web construction that reduces entry resistance and improves chip evacuation. The straight-cylindrical shank measures 10.00 millimeters in diameter, and the overall length is 93.00 millimeters (approximately 3.66 inches). With a 0.3839 inch (9.75 mm) cutting diameter and a regular spiral flute configuration, it delivers consistent hole quality in production drilling applications. The shorter screw machine length body provides added rigidity compared to jobber-length bits.

This drill bit is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format makes it a common choice on drill presses, CNC machining centers, and turret lathes where stub-length tooling is preferred for rigidity and reduced deflection. Right-hand cutting direction and a 2-flute spiral design are standard for general-purpose through-hole and blind-hole applications in metal fabrication and production shops.

Key Features

• 0.3839 inch (9.75 mm) cutting diameter with a tolerance of +0 to -0.022 mm
• 120-degree faceted drill point for accurate self-centering on metal surfaces
• Web-thinned, tapered web reduces thrust and improves chip flow
• High speed steel construction with coated finish for extended tool life
• Screw machine length body provides greater rigidity than jobber-length alternatives
• 2-flute regular spiral design with a 5xD flute-to-diameter ratio

Compatibility

Designed for use with standard straight-shank drill chucks accepting a 10.00 mm shank diameter; suitable for steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces as noted in OSG Series 1100 tooling specifications.

Installation Notes

Install in a drill chuck or collet rated for the 10.00 mm straight-cylindrical shank and confirm secure seating before operation. Match spindle speed and feed rate to the workpiece material per standard machining data references for high speed steel tooling. Inspect the cutting edges and point for wear or chipping before each use; a damaged point will produce oversized or out-of-round holes. Coolant through is not supported on this bit, so apply external coolant or cutting fluid appropriate to the workpiece material.