Hertel C.E02.0118 Aircraft Extension Drill Bit 56 Hss

Product Description

The HERTEL C.E02.0118 is a wire gauge size 56 aircraft extension drill bit designed for precision drilling in tight or hard-to-reach applications. Built from high-speed steel with an oxide finish, it features a 135-degree split point that reduces walking and improves hole accuracy without a center punch. The 6-inch overall length provides the reach required for aircraft-style access drilling, while the spiral flute geometry clears chips efficiently. The straight cylindrical shank and 0.0465-inch decimal diameter make it compatible with standard drill chucks. This bit is suited for use by aerospace maintenance technicians, precision machinists, and trade professionals working in confined-access drilling scenarios.

This aircraft extension drill bit is used in applications where standard-length bits cannot reach the work surface, including drilling through structural panels, flanges, or layered assemblies in aerospace, HVAC ductwork fabrication, and general metal fabrication. The wire size 56 designation corresponds to a 0.0465-inch diameter, making it appropriate for fine pilot holes, rivet-prep work, and close-tolerance drilling in steel, aluminum, and similar materials. It conforms to NAS 907 standards, which are commonly referenced in aerospace and precision machining environments.

Key Features

• Wire size 56 diameter (0.0465 inches) for fine, close-tolerance drilling
• 135-degree web-thinned point reduces thrust and minimizes drill walking
• High-speed steel construction withstands heat generated in metal drilling
• Oxide finish provides mild corrosion resistance and lubricity
• 6-inch overall length delivers extended reach for aircraft-style access work
• Right-hand spiral flute with tapered web promotes efficient chip evacuation

Compatibility

Designed as an OEM-style replacement and general-purpose drill bit for use in standard straight-shank drill chucks requiring a wire gauge size 56 diameter extension bit conforming to NAS 907.

Installation Notes

This bit is installed by machinists and precision drilling technicians using standard keyed or keyless drill chucks rated for the 0.0465-inch shank diameter. Secure the shank fully in the chuck before operation to prevent slippage or runout. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and maintain hole quality. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.