Precision Twist Drill 6001481 Aircraft Drill Bit 0.157 in

Product Description

The PRECISION TWIST DRILL 6001481 is a high speed steel aircraft extension drill bit designed for precision hole-making in aerospace and general metalworking applications. Built to Series 501-6 standards, it features a 135-degree split point that is self-centering, reducing walking on entry and eliminating the need for a center punch on most surfaces. The 0.157-inch diameter matches wire size 22 and carries a black oxide finish that provides mild corrosion resistance and reduces friction during cutting. The 2-inch spiral flute length paired with a 6-inch overall length gives technicians extended reach in confined or deep-access drilling situations.

This drill bit is suited for production drilling in aircraft assemblies, sheet metal fabrication, and general-purpose metalworking where extended reach is required. The straight-cylindrical shank seats securely in standard drill chucks without modification. Right-hand cutting direction is standard for conventional drill press and handheld power drill use. The web-thinned, tapered web construction reduces thrust required at the cutting edge, making it practical for thinner materials and stack drilling common in aircraft maintenance environments.

Key Features

• 135-degree split point is self-centering for accurate hole placement without center punching
• Web-thinned tapered web reduces drilling thrust and heat buildup
• 6-inch overall length provides extended reach for deep or obstructed drilling locations
• Black oxide finish offers mild lubricity and corrosion resistance
• Straight-cylindrical shank fits standard drill chucks without adapters
• Meets NAS 907 Type B standard for aerospace-grade drill bit performance

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring a wire size 22 (0.157-inch) aircraft extension drill conforming to NAS 907 Type B specifications.

Installation Notes

This drill bit is typically installed and operated by machinists, aircraft maintenance technicians, or sheet metal workers using a drill press or handheld power drill with a compatible chuck. Secure the shank fully in the chuck before operation and verify runout is within acceptable limits. Use appropriate cutting fluid or lubricant for ferrous materials to extend tool life. Inspect the cutting edges and split point for wear or damage before each use and replace if chipping or dulling is observed.