Precision Twist Drill 6001402 5/32 Inch Aircraft Drill Bit

Product Description

The PRECISION TWIST DRILL 6001402 is a 5/32-inch (0.1563 inch decimal) high speed steel aircraft extension drill bit designed for deep-reach drilling in metal fabrication, aerospace maintenance, and general industrial applications. Built to Series 500-12 specifications and compliant with NAS 907 Type B standards, it features a 135-degree split point that is self-centering and web-thinned for fast, accurate starts without a center punch. The oxide finish provides basic lubricity and corrosion resistance. With a 12-inch overall length and a 2-inch spiral flute section, this bit gives technicians extended reach into confined or deep structures where a standard-length drill will not fit.

This extension drill is suited for aircraft sheet metal work, HVAC duct fabrication, automotive body work, and any trade application requiring reach beyond what a jobber-length bit can provide. The straight-cylindrical shank fits standard 3-jaw drill chucks without adapters. Right-hand cutting direction makes it compatible with conventional corded and cordless drills. At a 4xD flute-to-diameter ratio, chip evacuation remains effective even in deeper bore passes.

Key Features

• 135-degree split point is self-centering and web-thinned — no center punch required on most metals
• 12-inch overall length provides extended reach into deep or obstructed work areas
• High speed steel construction handles steel, aluminum, copper, and similar metals
• Oxide finish improves surface lubricity and provides light corrosion protection
• Straight-cylindrical shank fits standard 3-jaw drill chucks directly
• NAS 907 Type B compliant — meets aerospace and industrial drill bit standards

Compatibility

Designed as a general-purpose 5/32-inch extension drill bit compatible with any standard 3-jaw drill chuck accepting a straight-cylindrical shank of 0.1563 inch diameter, for use in corded drills, cordless drills, and drill presses.

Installation Notes

Secure the straight shank fully in the chuck before drilling and verify the bit runs true before engaging the workpiece. Power down the drill and disconnect or lock out the power source before changing bits. Use cutting fluid or a suitable lubricant when drilling ferrous metals to extend bit life and reduce heat buildup. Do not exceed the rated speed range for the drill bit diameter — consult the drill manufacturer's speed chart for 5/32-inch high speed steel bits.