Osg 8595079 Screw Machine Drill Bit 0.031 in Hss

Product Description

The OSG 8595079 is a screw machine length drill bit designed for high-performance drilling in a variety of metalworking applications. Built from high speed steel (HSS) with a coated finish, this bit features a 150-degree faceted drill point and a web-thinned, tapered web configuration that reduces entry force and improves centering accuracy. The straight-cylindrical shank measures 3.00 millimeters in diameter, and the overall length is 38.00 millimeters (approximately 1.5 inches). The two-flute spiral design promotes efficient chip evacuation during drilling. Machinists and tool-and-die professionals rely on this format for stub-length rigidity in tight clearance setups.

This bit is suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length (stub) format makes it a natural fit for CNC machining centers, drill presses, and manual lathes where shorter flute length and reduced deflection are priorities. The Series 1100 designation places this bit in OSG's high-performance line, making it appropriate for production environments where consistent hole quality and tool life matter. It is sold and packaged as a single unit.

Key Features

• 0.031 inch (1/32 inch, Wire Size 68) drill diameter with a tolerance of +0 to -0.014 mm
• 150-degree faceted drill point for accurate starts on flat and curved surfaces
• Web-thinned, tapered web reduces thrust force and improves chip flow
• High speed steel construction with coated finish for extended tool life
• Screw machine (stub) length format provides added rigidity and reduced deflection
• Right-hand cut, regular spiral flute with 5xD flute-to-diameter ratio

Compatibility

Designed as a stub-length HSS drill bit for use in standard straight-shank drill chucks and collets accepting a 3.00 mm shank diameter, compatible with CNC machining centers, manual drill presses, and lathes configured for screw machine length tooling.

Installation Notes

This drill bit is installed and serviced by machinists and toolroom professionals. Secure the straight-cylindrical shank firmly in a compatible drill chuck or collet before operation, and verify that runout is within acceptable tolerance for the application. Always power down and lock out the machine before changing tooling. Do not exceed the recommended speed and feed parameters for the workpiece material being drilled.