Cleveland C13151 Aircraft Extension Drill Bit Size 29 Hss

Product Description

The CLEVELAND C13151 is an aircraft extension drill bit designed for precision drilling in aerospace and industrial applications. Built from high-speed steel with a bright uncoated finish, this bit carries a wire gauge size of 29, corresponding to a decimal diameter of 0.1360 inches. The 135-degree split point with web thinning allows the bit to self-center on contact, reducing walking and the need for a center punch. The 6-inch overall length provides reach into recessed or tight areas that standard-length bits cannot access. Licensed HVAC technicians, aviation maintenance professionals, and industrial machinists are the primary installers for this type of tooling.

This bit is suited for general-purpose drilling in sheet metal, aluminum, and steel structures where extended reach is required. The 1.75-inch spiral flute length provides adequate chip evacuation during drilling operations in both through-hole and blind-hole scenarios. The straight cylindrical shank fits standard drill chucks without adapters. It conforms to NAS 907 Type B standards, making it appropriate for aerospace maintenance and structural repair work in both production and field service environments.

Key Features

• Wire size 29 with 0.1360-inch decimal diameter and tight tolerance of +0.0000 to -0.0007 inches
• 135-degree split point with web thinning for self-centering entry and reduced thrust
• High-speed steel construction provides durability across a range of metal substrates
• 6-inch overall length gives extended reach for deep or obstructed drilling locations
• Tapered web configuration with right-hand spiral flute for efficient chip removal
• Meets NAS 907 Type B standard for aerospace and industrial use

Compatibility

Designed as a general-purpose aircraft extension drill bit suitable for use in standard drill chucks accepting a 0.1360-inch straight cylindrical shank, conforming to NAS 907 Type B requirements.

Installation Notes

This bit is intended for use by machinists, aviation maintenance technicians, and metalworkers operating hand drills, drill presses, or pneumatic drilling equipment. Secure the workpiece before drilling and ensure the chuck is properly tightened to prevent slippage on the straight cylindrical shank. Use appropriate cutting fluid when drilling ferrous materials to extend bit life and maintain tolerance. Inspect the cutting edges for wear before each use, as a dull split point will increase thrust and reduce hole accuracy.