Precision Twist Drill 6001302 Wire 50 Hss Extension Drill

Product Description

The PRECISION TWIST DRILL 6001302 is a high speed steel aircraft extension drill bit designed for precision drilling in tight or deep-reach applications. Built to Series 501-6 specifications, it carries a wire gauge size of 50, which corresponds to 0.070 inches in decimal. The 135-degree split point geometry is self-centering, reducing the need for a center punch on most materials. An oxide finish provides mild corrosion resistance and helps reduce friction during cutting. This bit is installed and used by machinists, aircraft maintenance technicians, and trade professionals requiring accurate small-diameter hole placement.

This drill bit is suited for general-purpose drilling in metal, sheet stock, and structural components where extended reach is required. The aircraft extension body allows access to recessed or obstructed hole locations that standard-length bits cannot reach. With a 1-inch flute length and 6-inch overall length, it handles moderate chip evacuation while maintaining rigidity at this diameter. The right-hand spiral flute and web-thinned, tapered web configuration improve cutting efficiency in steel and aluminum substrates commonly found in HVAC equipment frames, electrical enclosures, and mechanical assemblies.

Key Features

• 135-degree split point is self-centering and reduces walking on entry
• Wire size 50 (0.070 inches) decimal diameter for precision small-hole work
• 6-inch overall length with aircraft extension design for deep or obstructed access
• High speed steel construction rated for general-purpose metal drilling
• Oxide finish reduces friction and provides light surface protection
• Web-thinned, tapered web improves cutting efficiency and reduces thrust
• Meets NAS 907 Type B standard

Compatibility

Designed as a general-purpose aircraft extension drill bit for use with standard straight-shank drill chucks accepting a 0.070-inch diameter shank. Compatible with handheld drills, drill presses, and right-angle drill attachments that accommodate a straight-cylindrical shank at this diameter.

Installation Notes

This bit is used by machinists, aircraft maintenance technicians, and general trade professionals. Secure the workpiece before drilling and ensure the chuck is properly tightened on the straight-cylindrical shank before operation. Use appropriate cutting fluid when drilling hardened steel to extend bit life. Inspect the split point for wear or chipping before each use, as small-diameter bits at this size are susceptible to breakage under side load.