Hertel C.E05.0159 Aircraft Extension Drill Bit 1/16 in Hss

Product Description

The HERTEL C.E05.0159 is a 1/16 inch diameter aircraft extension drill bit designed for reaching deep or restricted drilling locations that standard-length bits cannot access. Built from high-speed steel with an oxide finish, it measures 12 inches in overall length, making it well suited for drilling through airframes, sheet metal, structural panels, and similar tight-access assemblies. The 135-degree split point is self-centering, reducing the need for a center punch on most surfaces. The spiral flute design clears chips efficiently, and the web-thinned, tapered web configuration reduces thrust and minimizes walking at entry. This bit is handled by machinists, aviation maintenance technicians, and fabricators working with metal in confined locations.

This drill bit is built for general-purpose metal drilling applications where standard bit length is insufficient. It fits typical use cases in aerospace maintenance, HVAC sheet metal fabrication, electrical panel work, and structural steel applications where extended reach is required. The straight cylindrical shank accepts standard drill chucks without adapters. The right-hand cutting direction is compatible with all conventional drill motors and drill presses.

Key Features

• 135-degree split point is self-centering for accurate hole starts without a center punch
• 12 inch overall length provides extended reach into deep or obstructed work areas
• High-speed steel construction handles steel, aluminum, and most common metals
• Oxide finish provides basic surface protection and reduces friction during cutting
• Web-thinned tapered web reduces drilling thrust and walking tendency
• 2-flute spiral design promotes efficient chip evacuation from deep holes

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with any standard drill chuck or drill press accepting a 1/16 inch straight cylindrical shank.

Installation Notes

This bit is installed and operated by machinists, aviation maintenance technicians, and metal fabricators. Secure the workpiece firmly before drilling to prevent movement at the small diameter entry point. Use appropriate cutting fluid on harder metals to extend bit life and reduce heat buildup. Inspect the cutting edges before each use, as small-diameter high-speed steel bits are susceptible to tip breakage if subjected to side load or excessive feed pressure.