Osg 8595091 Screw Machine Drill Bit 0.036 in Hss

Product Description

The OSG 8595091 is a screw machine length drill bit designed for high-performance drilling in tight-tolerance applications. It has a 0.036-inch (wire size 64) diameter and is made from high-speed steel with a coated finish for improved wear resistance. The 150-degree faceted point angle and web-thinned, tapered web configuration reduce entry force and improve chip evacuation. With two spiral flutes and a regular spiral type, it delivers consistent chip removal in production drilling environments. This bit is suited for use in CNC machining centers, drill presses, and manual screw machine setups. Installation and operation are performed by machinists and tool-and-die professionals.

This drill bit is built for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. The screw machine length format — shorter than jobber length — provides added rigidity and reduced deflection, making it well suited for high-volume production drilling, close-tolerance hole work, and applications where tool overhang must be minimized. The straight-cylindrical shank fits standard drill chucks and collet systems. The flute-to-diameter ratio of 5xD supports effective chip clearance in shallow-to-moderate depth holes.

Key Features

• Wire size 64 diameter: 0.036 inches (0.91 mm) with a diameter tolerance of plus 0 to minus 0.014 mm
• High-speed steel construction with coated finish for extended tool life
• 150-degree faceted drill point angle for reduced thrust and self-centering entry
• Web-thinned, tapered web design lowers cutting resistance on entry
• Two spiral flutes with regular spiral type for reliable chip evacuation
• Screw machine length body provides increased rigidity over jobber-length equivalents
• Right-hand cut direction; straight-cylindrical shank for broad chuck compatibility

Compatibility

Designed as an OEM-style replacement or production-use drill bit for standard drill chucks and collet holders accepting a 3.00 mm straight-cylindrical shank, suitable for use in screw machine, CNC, and manual drilling applications on steel, stainless steel, aluminum, and aluminum alloy workpieces.

Installation Notes

This drill bit is installed and used by machinists, tool-and-die technicians, and production drilling personnel. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the straight-cylindrical shank fully and evenly in the chuck or collet before tightening. Use appropriate cutting fluid or coolant for the workpiece material to maximize tool life, noting that this bit does not support through-coolant delivery.