Osg 8595508 Screw Machine Drill Bit 13/64 in Tin Hss

Product Description

The OSG 8595508 is a screw machine length drill bit designed for high-performance drilling in demanding shop and field applications. It measures 13/64 inch (0.2031 inch decimal) in diameter with an overall length of 70.00 mm (2.756 inches) and a flute length of 26.00 mm. The bit is manufactured from vanadium high-speed steel and features a titanium nitride (TiN) coating that extends cutting tool life and reduces friction. The 120-degree, 4-facet point geometry with web thinning promotes accurate entry and reduces thrust force when drilling into ferrous and non-ferrous materials.

This screw machine length bit is suited for production drilling, toolroom work, and general machining operations where a shorter, more rigid tool is preferred over a jobber-length bit. Its compact geometry reduces deflection in tight setups or on short-travel drill presses. Primary target materials include steel, stainless steel, aluminum, and other non-ferrous metals, making it a versatile choice for machinists, maintenance technicians, and fabricators working across a range of workpiece materials.

Key Features

• 13/64 inch (5.08 mm) diameter with a diameter tolerance of +0 to -0.018 mm for precise hole sizing
• TiN coating reduces friction and improves wear resistance compared to uncoated HSS
• 4-facet, 120-degree point with web thinning for reduced thrust and accurate self-centering
• Vanadium high-speed steel construction handles elevated cutting temperatures
• Screw machine (stub) length design increases rigidity and minimizes deflection
• Regular spiral flute with tapered web configuration promotes chip evacuation

Compatibility

Designed as a screw machine length replacement drill bit for use in standard straight-shank drill chucks; compatible with drilling operations on steel, stainless steel, aluminum, and other non-ferrous workpieces as stated by the manufacturer.

Installation Notes

A licensed machinist or qualified technician should install and operate this bit using appropriate spindle speed and feed rate for the target material. Secure the straight cylindrical shank firmly in a keyed or keyless chuck before beginning operation. Ensure the drill press, lathe tailstock, or CNC machine is powered down and locked out before changing tooling. Do not exceed the rated cutting parameters for the workpiece material, and use cutting fluid where appropriate to maintain tool life.