Osg 8595256 Screw Machine Drill Bit 0.1008 in Hss

Product Description

The OSG 8595256 is a screw machine length drill bit designed for high-performance drilling in metalworking applications. Built from high speed steel with a coated finish, it features a 0.1008 inch (2.56 mm) diameter, a 130-degree faceted point angle, and a web-thinned tapered web configuration that reduces thrust and improves chip evacuation. The straight-cylindrical shank measures 3.00 mm in diameter and the overall length is 46.00 mm (approximately 1.81 inches). With two spiral flutes in a regular helix, this bit delivers consistent chip removal during right-hand cutting operations. It is sold individually and intended for use by machinists, tool-and-die technicians, and maintenance professionals working in shop or field environments.

This drill bit is suited for use on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format provides a shorter, more rigid profile than jobber-length bits, making it well-suited for drill press work, CNC operations, and manual spindle applications where accuracy and rigidity in tight setups are priorities. The 5xD flute-to-diameter ratio supports efficient chip clearing in moderate-depth holes.

Key Features

• 0.1008 inch (2.56 mm) cutting diameter with a tolerance of +0 to -0.014 mm for close-tolerance work
• 130-degree faceted point angle with web thinning reduces entry thrust and improves centering
• High speed steel construction with a coated finish for extended tool life on ferrous and non-ferrous materials
• Screw machine length (46.00 mm overall) provides added rigidity over jobber-length alternatives
• Regular spiral, two-flute design supports efficient chip evacuation in right-hand cutting
• Compatible with primary workpiece materials including steel, stainless steel, and aluminum alloys

Compatibility

Designed as an OEM-style replacement and standard production drill bit for use in screw machine, drill press, and CNC spindle applications requiring a 0.1008 inch diameter in the 0.1000 to 0.1500 inch size range. Part of the OSG Series 1100 product line.

Installation Notes

Installation and use should be performed by qualified machinists or tool operators. Secure the shank fully in the chuck or collet before operation and verify spindle speed is appropriate for the workpiece material and bit diameter. Power down and de-energize any machine tool before changing or inspecting the bit. Do not exceed the rated cutting parameters for the workpiece material.