Precision Twist Drill 5996515 Cobalt Drill Bit 0.323 in

Product Description

The PRECISION TWIST DRILL 5996515 is a screw machine length cobalt drill bit designed for high-performance drilling in hard and tough materials. Sized at 0.323 inches (Letter P) in diameter, it features a 135-degree split point that reduces walking and lowers the thrust required to start a hole. The M42 cobalt steel construction provides heat resistance during heavy-duty cutting applications. Web thinning improves chip clearance and cutting efficiency. This bit is suited for machinists, maintenance technicians, and fabricators working with stainless steel, hardened alloys, and other demanding workpiece materials.

This drill bit is built for screw machine length applications where a shorter, more rigid tool is preferred over a jobber-length bit. The straight cylindrical shank fits standard drill chucks on drill presses, CNC machines, screw machines, and hand-held power drills. Its 2.5xD flute-to-diameter ratio and regular spiral flute geometry support controlled chip evacuation in production and shop environments. It is sold individually and is appropriate for professional metalworking and industrial maintenance use.

Key Features

• M42 cobalt steel construction for heat resistance and durability in hard materials
• 135-degree split point reduces bit walking and decreases required feed pressure
• Web-thinned, tapered web configuration improves chip flow and cutting efficiency
• Screw machine length body provides added rigidity compared to jobber-length bits
• Straight cylindrical shank compatible with standard drill chucks
• Meets ANSI standards for geometry and dimensional tolerancing

Compatibility

Designed for use in standard drill chucks on drill presses, screw machines, CNC equipment, and hand-held power drills. Primary workpiece material category is hard material, including stainless steel and high-strength alloys. Part of the PRECISION TWIST DRILL M42CO series.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with drill press and machine tool operation. Secure the shank fully in the drill chuck and confirm runout is within acceptable limits before cutting. Use appropriate cutting fluid or coolant when drilling hard materials to extend tool life. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.