Precision Twist Drill 6001268 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001268 is a wire-gauge aircraft extension drill bit designed for precision drilling in tight or deep-reach applications. Built from high speed steel with an oxide finish, this bit features a 135-degree split point that is self-centering and web-thinned for fast, accurate entry without a center punch. The 0.0935-inch diameter corresponds to wire size 42 and is matched by a straight-cylindrical shank of the same diameter. The spiral flute measures 1.25 inches in length, and the overall tool length is 6 inches. This is a Series 501-6 general-purpose extension bit used by aviation maintenance technicians, machinists, and sheet metal workers.

This bit is suited for drilling aluminum, mild steel, and similar materials in aircraft fuselage, sheet metal, and general fabrication work where standard-length bits cannot reach. The extended overall length of 6 inches allows access to recessed or obstructed hole locations common in aircraft and industrial assembly. Right-hand cutting direction and a 4xD flute-length-to-diameter ratio support chip evacuation in moderate-depth holes. It is sold individually and packaged as a single unit.

Key Features

• Wire size 42 (0.0935 inch diameter) for precision-gauge hole requirements
• 135-degree split point with web thinning for self-centering entry and reduced thrust
• High speed steel construction with oxide finish for wear resistance
• 6-inch overall length provides extended reach in confined work areas
• Straight-cylindrical shank compatible with standard chucks and extension holders
• Meets NAS 907 Type B standards for aircraft drilling applications

Compatibility

Designed as an OEM-style general-purpose aircraft extension drill bit conforming to NAS 907 Type B, suitable for use with standard drill chucks accepting a 0.0935-inch straight-cylindrical shank.

Installation Notes

Installation and use of this bit is typically performed by aviation maintenance technicians, machinists, or sheet metal fabricators. Secure the straight-cylindrical shank firmly in the drill chuck before use and verify chuck tightness to prevent slippage. Use appropriate cutting fluid for steel or hard materials to extend bit life and improve hole finish. Inspect the split point for damage before each use; a chipped or worn point will cause walking and oversized holes.