Precision Twist Drill 5996592 Taper Length Cobalt Drill Bit

Product Description

The PRECISION TWIST DRILL 5996592 is a taper length cobalt drill bit designed for demanding metal fabrication and machining applications. Built to Series M51CO specifications, it features a 13/32 inch (0.4062 inch decimal) diameter with a 135-degree split point for self-centering starts and reduced walking on hard surfaces. The straight cylindrical shank and spiral flute geometry are suited for use in standard drill presses, CNC machines, and hand-held power drills. This bit is intended for installation and maintenance professionals, machinists, and fabricators who work regularly with tough ferrous and non-ferrous materials.

This drill bit is rated for a broad range of material applications including alloy steel, carbon steel, stainless steel, hardened steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, high-strength bronze, copper, nickel, nickel alloy, magnesium, magnesium alloy, cermet, graphite, and reinforced plastic. The heavy-duty cobalt construction with gold oxide finish makes it well suited for production drilling in shops and field maintenance environments where bit longevity under heat and friction is a priority.

Key Features

• 135-degree split point for self-centering entry and reduced drill walk on metal surfaces
• Cobalt tool material with gold oxide coating for extended heat resistance and wear life
• Web-thinned, tapered web configuration reduces cutting resistance and improves chip evacuation
• Right-hand spiral flute with 6xD flute-to-diameter ratio provides efficient chip clearing in deep holes
• Straight cylindrical shank fits standard drill chucks without adapters
• Meets ANSI standards; rated as heavy-duty, high-performance grade

Compatibility

Designed as an OEM-style replacement or direct-use taper length drill bit compatible with standard straight-shank drill chucks on drill presses, CNC drilling machines, and handheld power drills accepting a 13/32 inch shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotary cutting tools and applicable shop safety practices. Ensure the drill chuck is fully tightened and the workpiece is securely clamped or fixtured before starting the cut. Use appropriate cutting fluid or coolant for the specific material being drilled, particularly with stainless steel or hardened steel, to preserve bit life. Inspect the cutting edges for wear or chipping before each use and replace the bit if edge integrity is compromised.