Hertel C.E03.0422 Aircraft Extension Drill Bit No. 19

Product Description

The HERTEL C.E03.0422 is an aircraft extension drill bit designed for reaching into deep or obstructed work areas where a standard-length bit cannot access. Built from high-speed steel with an oxide finish, this bit features a 135-degree split point that is self-centering and reduces the need for a center punch before drilling. The 6-inch overall length and 2.125-inch flute length give it the reach needed for aerospace-style and structural metalworking applications. It is web-thinned with a tapered web configuration, reducing cutting resistance and improving chip evacuation in metal drilling operations.

This drill bit is suited for general-purpose drilling in metal, including use in aircraft assembly, sheet metal fabrication, and structural work where extended reach is required. The straight cylindrical shank fits standard drill chucks without adapters. Its right-hand spiral flute geometry and two-flute design make it a practical choice for machinists, maintenance technicians, and aerospace assembly professionals working with steel, aluminum, and similar materials. It meets NAS 907 standards, making it appropriate for applications where certified tooling is specified.

Key Features

• 135-degree split point is self-centering, reducing or eliminating need for center punch
• Web-thinned tapered web reduces thrust and improves cutting efficiency
• 6-inch overall length provides extended reach for deep or confined drilling locations
• High-speed steel construction with oxide finish for general-purpose metal drilling
• Straight cylindrical shank fits standard drill chucks directly
• Meets NAS 907 standard for aircraft-quality tooling

Compatibility

Designed as a general-purpose aircraft extension drill bit for use in standard drill chucks accepting a 0.1660-inch straight cylindrical shank. Suitable for metalworking, aerospace assembly, and structural fabrication applications requiring NAS 907-compliant tooling.

Installation Notes

This bit is installed and operated by machinists or trained technicians using a standard drill press, hand drill, or right-angle drill with a compatible chuck. Ensure the shank is fully seated and the chuck is tightened before operation. Use appropriate cutting fluid when drilling ferrous metals to extend tool life and maintain hole quality. Follow applicable shop safety standards and wear appropriate eye protection during use.