Osg 8595239 Screw Machine Drill Bit 0.0941 in Hss

Product Description

The OSG 8595239 is a screw machine length drill bit designed for high-performance drilling in metalworking applications. Built from high speed steel with a coated finish, this bit features a 130-degree faceted point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation at entry. At 0.0941 inches (2.39 mm) in diameter with a straight-cylindrical shank, it is sized for close-tolerance work where a stub-length bit provides added rigidity over standard jobber-length tooling. Licensed machinists, tool and die technicians, and production drilling operators are the primary users.

This bit is suited for production and maintenance drilling operations on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length body keeps deflection low in drill press, CNC machining center, and turret lathe setups where short tool projection is required. The 5xD flute-to-diameter ratio and regular spiral flute geometry support consistent chip clearing at moderate feed rates in both through-hole and blind-hole applications.

Key Features

• 0.0941 inch (2.39 mm) diameter with a tight tolerance of +0 to -0.014 mm
• 130-degree faceted point with web thinning for reduced entry thrust
• High speed steel construction with coated finish for extended tool life
• Screw machine length body provides rigidity over standard jobber-length bits
• Right-hand cut, 2-flute regular spiral design supports chip evacuation
• No coolant-through — suited for dry or externally flooded cutting setups

Compatibility

Designed as an OEM-style replacement or direct-use drilling tool compatible with steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces per OSG Series 1100 specifications.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with proper chuck seating and runout verification. Secure the straight-cylindrical shank firmly in a drill chuck or collet before operation and confirm shank seating before applying feed pressure. Inspect the cutting edges for wear or chipping before each use, and replace the bit if the point geometry is compromised. Refer to the machine manufacturer guidelines and applicable shop safety standards for feed rate and speed selection.