Hertel C.E03.0178 Aircraft Extension Drill Bit Size 50

Product Description

The HERTEL C.E03.0178 is an aircraft extension drill bit designed for deep-reach drilling in tight or hard-to-access locations. Built from high-speed steel with an oxide finish, it delivers durability and heat resistance during extended cutting operations. The bit uses a 135-degree split point for self-centering entry, reducing walking on the workpiece and minimizing the need for a center punch. With a straight cylindrical shank measuring 0.0700 inches in diameter and a 6-inch overall length, it gives machinists and aircraft maintenance technicians the reach needed for structural panel and airframe work. The spiral flute configuration efficiently clears chips throughout the cut.

This bit is suited for use in aircraft assembly, maintenance, and sheet metal fabrication environments where standard-length bits cannot reach. The extended body makes it applicable in automotive, aerospace, and general metalworking applications where deep-hole drilling or access through multiple layers of material is required. It conforms to NAS 907 standards, making it appropriate for aerospace-grade work. The general-purpose tool performance rating means it handles a range of ferrous and non-ferrous materials at standard drilling speeds.

Key Features

• 135-degree split point for self-centering starts without a center punch
• High-speed steel construction with oxide finish for heat and wear resistance
• 6-inch overall length for extended reach in deep or confined drilling locations
• Straight cylindrical shank at 0.0700 inches for compatibility with standard chucks
• Two-flute spiral design with web thinning for efficient chip evacuation
• Meets NAS 907 aerospace drilling standards

Compatibility

Designed as a general-purpose aircraft extension drill bit for use in standard 3-jaw and collet chucks accepting a 0.0700-inch straight cylindrical shank. Suitable for handheld pneumatic drills and benchtop drill presses commonly used in aerospace and sheet metal fabrication.

Installation Notes

Installation and use should be performed by qualified machinists or aircraft maintenance technicians familiar with drilling procedures for structural materials. Secure the workpiece firmly before drilling to prevent movement. Inspect the bit for wear, chipping, or runout before each use, and replace immediately if damage is found. Follow applicable shop safety standards and any relevant NAS or OEM specifications for the material being drilled.