Precision Twist Drill 6001507 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001507 is a high speed steel aircraft extension drill bit designed for precision drilling in tight or extended-reach applications. Built to Series 501-6 specifications, it features a 135-degree split point that is self-centering and web-thinned, reducing the need for a center punch and minimizing walking on hard surfaces. The 0.113 inch diameter corresponds to wire gauge size 33. Two spiral flutes measuring 1.5 inches in length provide efficient chip evacuation. An oxide finish protects the tool surface during use. This bit is suited for use by aviation maintenance technicians, machinists, and general trade professionals working on metal fabrication or structural drilling tasks.

This drill bit is intended for general purpose metal drilling where extended reach or close-tolerance wire gauge sizing is required. The straight-cylindrical shank seats reliably in standard drill chucks without requiring a special holder. With a right-hand cutting direction and a 4xD flute-to-diameter ratio, it performs well in ferrous and non-ferrous metals. It is commonly used in sheet metal work, airframe assembly, and precision machining environments where wire gauge drill sizes are specified by engineering drawings or aerospace standards such as NAS 907 Type B.

Key Features

• Wire gauge size 33 (0.113 inch diameter) for close-tolerance drilling
• 135-degree split point with web thinning for self-centering entry and reduced thrust
• High speed steel construction for durability across ferrous and non-ferrous metals
• Oxide finish for basic surface protection during drilling operations
• Straight-cylindrical shank compatible with standard drill chucks
• Meets NAS 907 Type B standard for aircraft extension drill applications

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring NAS 907 Type B aircraft extension drills in wire gauge size 33, fitting standard drill chucks that accept a 0.113 inch straight-cylindrical shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists, aviation maintenance technicians, or experienced tradespeople. Secure the straight-cylindrical shank firmly in the drill chuck before operation and verify chuck runout is within acceptable limits for the tolerance required. Use cutting fluid appropriate for the workpiece material to extend tool life and improve hole finish. Follow applicable workplace safety standards and wear proper eye protection during all drilling operations.