Osg 8595775 Screw Machine Drill Bit 0.3051 in Hss

Product Description

The OSG 8595775 is a screw machine length drill bit designed for high-performance drilling in metal fabrication and machining applications. Built from high speed steel with a coated finish, this bit features a 120-degree faceted point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation at entry. The straight-cylindrical shank measures 8.00 millimeters in diameter, and the overall length is 81.00 millimeters (approximately 3.19 inches). A two-flute spiral design with a regular spiral type delivers consistent chip clearing during through-hole and blind-hole operations. This bit is sold individually and suited for production drilling environments where tool consistency and dimensional accuracy matter.

This drill bit is intended for use on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length — shorter than jobber length — improves rigidity and reduces deflection in drill press, turret lathe, and CNC machining center setups. It is a strong fit for machine shops, maintenance facilities, and production lines where compact drill length and a 5xD flute-to-diameter ratio are preferred for controlled chip flow in tight spindle arrangements.

Key Features

• 0.3051 inch (7.75 mm) cutting diameter with a tolerance of plus 0 to minus 0.022 mm
• 120-degree faceted point angle with web-thinned tapered web for reduced entry thrust
• High speed steel construction with coated finish for wear resistance
• Screw machine length with 5xD flute ratio for improved rigidity over jobber-length bits
• Two-flute regular spiral configuration for efficient chip evacuation
• Right-hand cut; coolant-through feature not included

Compatibility

Designed for use on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Fits standard straight-shank drill chucks and collets accepting an 8.00 mm shank diameter.

Installation Notes

Installation and use should be performed by machinists or qualified trade professionals familiar with rotating cutting tools. Secure the shank fully in a drill chuck or collet before operation and verify chuck key removal before powering the spindle. Always wear appropriate eye protection and follow the machine manufacturer speed and feed recommendations for the workpiece material. Inspect the cutting edge for chipping or wear before each use and replace the bit if the edge is compromised.