Precision Twist Drill 6001343 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001343 is a high speed steel aircraft extension drill bit designed for precision hole-making in metal fabrication, aerospace maintenance, and general industrial applications. Built to Series 501-6 standards and conforming to NAS 907 Type B, this bit carries a wire gauge size of 7, translating to a decimal diameter of 0.201 inches. The 135-degree split point self-centers on contact, reducing walking and the need for a center punch on flat or curved surfaces. A black oxide finish provides mild corrosion resistance and reduces friction during cutting. This is a tool installed and used by machinists, aviation maintenance technicians, and sheet metal workers.

This drill bit is suited for drilling through aluminum, mild steel, and similar materials in aircraft structures, automotive bodywork, and general fabrication. The extended overall length of 6 inches allows access to recessed areas and deep cavities that standard-length bits cannot reach. The 2.4375-inch spiral flute length provides adequate chip clearance during through-hole drilling. The straight-cylindrical shank seats directly into standard drill chucks without an adapter. It is a general-purpose tool appropriate for both production and maintenance work where reach and accuracy matter.

Key Features

• Wire size 7 diameter at 0.201 inches for precise, gauge-specified hole sizing
• 135-degree split point self-centers and reduces thrust force on entry
• 6-inch overall length provides extended reach into deep or restricted work areas
• High speed steel construction handles steel, aluminum, and similar metals
• Black oxide finish reduces friction and provides mild rust resistance
• Web-thinned tapered web for improved cutting efficiency and reduced heat buildup

Compatibility

Designed as an OEM-style general-purpose aircraft extension drill bit compatible with any standard drill chuck accepting a 0.201-inch straight-cylindrical shank. Conforms to NAS 907 Type B specification.

Installation Notes

This bit is used by machinists, aviation maintenance technicians, and sheet metal workers operating standard electric or pneumatic drills. Secure the straight-cylindrical shank fully into the chuck before operation and verify chuck key is removed before powering on. Use appropriate cutting fluid when drilling ferrous materials to extend tool life and reduce heat. Inspect the split point for wear or chipping before each use and replace if the geometry is compromised.