Hertel C.E05.0386 Aircraft Extension Drill Bit 135 Pt

Product Description

The HERTEL C.E05.0386 is an aircraft extension drill bit designed for precision drilling in aerospace and industrial applications. Built from high-speed steel with an oxide finish, it carries a 135-degree split point that reduces walking and improves self-centering on entry. The bit is web-thinned with a tapered web configuration, lowering the thrust force needed to penetrate hard materials. At 12 inches overall length and a 0.152-inch diameter, it reaches into confined or deep-access areas where standard-length bits cannot. Right-hand spiral flutes efficiently clear chips during cutting. This bit is a general-purpose tool suited for installation by machinists, maintenance mechanics, and aerospace technicians.

This extension drill bit is sized to wire gauge number 24, equivalent to 0.152 inch decimal diameter, and is manufactured to NAS 907 standards. It fits applications where extended reach is required, such as drilling through structural assemblies, sheet metal stacks, or confined airframe sections. The straight cylindrical shank seats directly in standard drill chucks without an adapter. Typical use cases include aerospace MRO work, precision metalworking, and general industrial fabrication where reach and accuracy are equally important.

Key Features

• 135-degree split point with self-centering geometry reduces bit walking on entry
• Web-thinned tapered web lowers drilling thrust and extends tool life
• 12-inch overall length provides extended reach into deep or restricted access areas
• 2-inch spiral flute length promotes efficient chip evacuation
• High-speed steel construction with oxide finish for corrosion resistance and lubricity
• Manufactured to NAS 907 standards for aerospace-grade dimensional consistency

Compatibility

Designed as a general-purpose extension drill bit compatible with standard drill chucks accepting a 0.152-inch straight cylindrical shank. Manufactured to NAS 907 dimensional standards for use in aerospace and industrial drilling applications.

Installation Notes

Installation and use should be performed by qualified machinists or mechanics familiar with drilling procedures for the material being worked. Secure the workpiece firmly before drilling and verify chuck grip on the straight shank before operation. Always wear appropriate eye protection and follow applicable shop safety procedures when operating rotary cutting tools. Inspect the bit for wear or damage before each use, as a worn split point will increase entry force and reduce hole accuracy.