Precision Twist Drill 6001332 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001332 is a high speed steel aircraft extension drill bit designed for drilling small-diameter holes in metal, composites, and other materials common in aviation and industrial maintenance work. Built to wire gauge size 59, this bit has a decimal diameter of 0.041 inches and a 135-degree split-point angle that helps start holes accurately without a center punch. The two-flute spiral configuration with a web-thinned, tapered web reduces thrust and improves chip evacuation. An oxide finish provides basic lubricity and corrosion resistance. Licensed HVAC technicians, aircraft mechanics, and general maintenance professionals install and use this bit with standard handheld or drill-press setups.

This drill bit is suited for precision small-hole work in sheet metal, aluminum, and similar substrates found in aircraft maintenance, HVAC equipment fabrication, and light industrial repair. The Series 501-6 designation identifies it as part of a standardized aircraft-extension line. Its straight-cylindrical shank accepts standard drill chucks without modification. At a 4xD flute-length-to-diameter ratio, it offers adequate chip clearance for shallow through-holes in thin material.

Key Features

• Wire gauge size 59 (0.041 inches decimal diameter) for precise small-diameter hole work
• 135-degree drill point angle for self-starting accuracy on flat and curved surfaces
• Web-thinned, tapered web reduces drilling thrust and improves chip flow
• Two-flute right-hand spiral cut for standard clockwise drill operation
• Oxide finish for light corrosion resistance and reduced friction
• Meets NAS 907 Type B standards for aircraft-grade tooling

Compatibility

Designed as an OEM-style replacement and general-use aircraft extension drill bit compatible with standard straight-cylindrical drill chucks accepting a 0.041-inch shank diameter.

Installation Notes

This drill bit is typically installed and used by aircraft mechanics, machinists, and maintenance technicians working with handheld drills or drill presses. Secure the straight-cylindrical shank firmly in the chuck and verify concentricity before drilling to prevent bit breakage at this small diameter. Use appropriate cutting fluid for metal substrates to extend bit life. Dispose of worn bits properly and never use a bent or cracked bit.