Hertel C.E03.0541 Aircraft Extension Drill Bit Size 3

Product Description

The HERTEL C.E03.0541 is a wire gauge size 3 aircraft extension drill bit designed for drilling in hard-to-reach locations where standard-length bits fall short. Built from high-speed steel with an oxide finish, this bit features a 135-degree split point that is self-centering and reduces walking on entry, making it suitable for precise hole placement in metal and composite materials. The spiral flute geometry with a tapered web and web-thinned construction reduces thrust and improves chip evacuation. At 6 inches overall length with a 2.5-inch flute length, it provides the reach required for airframe, structural, and general metalworking applications. It is installed by aviation maintenance technicians, machinists, and industrial tradespeople.

This aircraft extension drill bit is suited for use in aerospace maintenance, sheet metal fabrication, and general-purpose industrial drilling where extended reach is required. The 0.2130-inch decimal diameter corresponds to wire size 3 and is commonly used where close-tolerance hole sizing is needed. The straight cylindrical shank accepts standard drill chucks, and the right-hand cutting direction is compatible with conventional drilling equipment. This bit meets NAS 907 standards, making it appropriate for aerospace and high-demand industrial environments.

Key Features

• 135-degree split point is self-centering and reduces drill walking on workpiece entry
• Web-thinned, tapered web construction lowers cutting thrust and improves chip clearing
• 6-inch overall length provides extended reach for confined or obstructed work areas
• High-speed steel construction with oxide finish offers wear resistance in general-purpose metal drilling
• Spiral flute with two flutes promotes efficient chip evacuation during drilling
• Meets NAS 907 standard for aerospace-grade drill bit performance

Compatibility

Designed as a general-purpose aircraft extension drill bit with a straight cylindrical shank compatible with standard drill chucks and right-hand drilling equipment used in aerospace maintenance and industrial metalworking applications.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists, aviation maintenance technicians, or experienced tradespeople. Secure the workpiece firmly before drilling and ensure the drill chuck is properly tightened on the straight shank. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and improve hole quality. Inspect the bit for wear or chipping before each use and replace if the cutting edges are degraded.