Precision Twist Drill 6001309 Aircraft Drill Bit 51 Hss

Product Description

The PRECISION TWIST DRILL 6001309 is a wire-gauge aircraft extension drill bit designed for precision drilling in tight or deep access applications. Built from high speed steel with an oxide finish, this bit features a 135-degree split point that is self-centering, reducing the need for a center punch and minimizing walking on entry. The straight-cylindrical shank measures 0.067 inches in diameter and accepts standard drill chucks. With a 6-inch overall length and a 1-inch flute length, this bit is suited for reaching fastener locations in airframe, sheet metal, and general fabrication work where standard-length bits fall short.

This drill bit is used in aerospace, aircraft maintenance, and sheet metal fabrication environments where extended reach is required. The 135-degree split point and right-hand spiral flute geometry make it effective on aluminum, mild steel, and composite substrates common in aircraft structures. It is well suited for use with pneumatic or electric drill motors operating at appropriate RPM for the 0.067-inch diameter. Licensed A and P mechanics, sheet metal workers, and maintenance technicians are the primary installers and users of this tool.

Key Features

• Wire gauge size 51 (0.0670 inches decimal) for precision hole sizing
• 135-degree split point is self-centering and web-thinned for reduced thrust and cleaner entry
• 6-inch overall length provides extended reach in confined or deep access locations
• High speed steel construction with oxide finish for general-purpose durability
• Straight-cylindrical shank at 0.067 inches diameter fits standard chucks without adapters
• Right-hand 2-flute spiral geometry with tapered web for consistent chip evacuation
• Meets NAS 907 Type B standard

Compatibility

Designed as an OEM-style general-purpose aircraft extension drill bit conforming to NAS 907 Type B, suitable for use in standard drill chucks accepting a 0.067-inch straight-cylindrical shank.

Installation Notes

This bit is installed by aviation maintenance technicians, sheet metal workers, and fabricators using standard pneumatic or electric drill equipment. Select the appropriate RPM for the 0.067-inch diameter and material being drilled to avoid overheating the cutting edge. Secure the workpiece before drilling and use appropriate cutting fluid when drilling steel to extend bit life. Inspect the cutting edges before each use and retire the bit if chipping or dulling is observed.