Osg 8595313 Screw Machine Drill Bit 0.1232 in Hss

Product Description

The OSG 8595313 is a screw machine length drill bit designed for high-performance drilling in metal fabrication and machining applications. It measures 0.1232 inches (3.13 mm) in diameter with an overall length of 1.969 inches (50.00 mm) and a straight-cylindrical shank diameter of 0.157 inches (4.00 mm). The bit is manufactured from high speed steel with a coated finish, features a 130-degree faceted drill point, and incorporates a web-thinned, tapered web configuration for reduced thrust and improved chip evacuation. Two spiral flutes with a 5xD flute-to-diameter ratio handle material removal efficiently.

This drill bit is suited for production and repair drilling in shop and field environments. Its screw machine length profile makes it ideal for use in CNC machining centers, drill presses, and hand-operated equipment where a short, rigid bit reduces deflection. Primary workpiece materials include steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. The Series 1100 designation places it within OSG's high-performance tooling lineup, making it a go-to choice for machinists, tool and die technicians, and maintenance professionals working with ferrous and non-ferrous metals.

Key Features

• 0.1232 inch (3.13 mm) diameter with tolerance of +0 to -0.018 mm for consistent hole sizing
• 130-degree faceted drill point reduces walking and improves entry on hard materials
• Web-thinned, tapered web lowers cutting thrust and extends tool life
• High speed steel construction with coated finish for wear resistance
• Screw machine length for maximum rigidity and reduced deflection
• Right-hand cut with two spiral flutes for efficient chip removal

Compatibility

Designed for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Fits standard straight-shank drill chucks and collet holders accepting a 0.157 inch (4.00 mm) shank diameter.

Installation Notes

Install in a compatible straight-shank chuck or collet holder rated for the shank diameter before powering the machine. Ensure the workpiece is securely clamped and the spindle speed is set to a value appropriate for the workpiece material and bit diameter. Use cutting fluid or coolant appropriate to the workpiece material to maximize tool life; note this bit does not support coolant-through delivery. Inspect the drill point for wear or chipping before each use and replace if cutting edge integrity is compromised.