Osg 8595357 9/64 Inch Screw Machine Drill Bit Hss

Product Description

The OSG 8595357 is a screw machine length drill bit designed for high-performance drilling in metalworking and fabrication 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. The straight-cylindrical shank measures 4.00 millimeters in diameter and fits standard drill chucks without modification. At 52.00 millimeters overall length, the stub-length format provides added rigidity compared to jobber-length bits, making it well suited for work in tight clearances or on drill presses and CNC turret setups.

This bit is engineered for use on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The 5xD flute-to-diameter ratio and two-flute spiral configuration support consistent chip clearance across those materials. It is a practical choice for production drilling, maintenance repair operations, and precision hole work where dimensional accuracy and tool life under repeated cycling matter. The bit ships individually and is sold as a single unit.

Key Features

• 9/64 inch (0.1406 inch / 3.57 mm) cutting diameter with a tolerance of +0 to -0.018 mm
• 130-degree faceted point angle with web thinning for reduced entry thrust
• High speed steel construction with coated finish for extended wear resistance
• Screw machine (stub) length at 52.00 mm overall for added rigidity
• Two-flute regular spiral geometry supports efficient chip evacuation
• Right-hand cut, straight-cylindrical shank compatible with standard chucks

Compatibility

Designed as a screw machine length replacement drill bit for use on steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces in the 0.1000 to 0.1500 inch diameter range.

Installation Notes

Installation is performed by machinists, tool-and-die workers, or maintenance technicians using standard drill presses, CNC turrets, or hand-held power drills with compatible chuck sizes. Secure the straight-cylindrical shank firmly in the chuck before operation and verify runout before beginning production drilling. Use appropriate cutting fluid or coolant for the workpiece material to maintain tool life, noting that this bit does not support coolant-through delivery. Inspect the cutting edges for wear or chipping before each use and replace when point geometry is compromised.