Hertel C.E06.0238 Aircraft Extension Drill Bit 3/32 in Cobalt

Product Description

The HERTEL C.E06.0238 is a cobalt aircraft extension drill bit designed for drilling in tight or deep-access applications where standard-length bits cannot reach. Built from cobalt tool steel with a straw finish, this bit features a 135-degree split point that self-centers on contact, reducing the need for a center punch and minimizing walking on hard or curved surfaces. The spiral flute geometry with a web-thinned, tapered web configuration promotes efficient chip evacuation. At 6 inches overall length with a 1.25-inch flute length, it is suited to aerospace-style and structural drilling tasks performed by machinists, aircraft mechanics, and metalworking tradespeople.

This drill bit is intended for general-purpose metalworking where extended reach is required, such as drilling through structural steel, aluminum, and other metals in confined or obstructed areas. It is sized at 3/32 inch (0.0938 inch decimal) with a straight-cylindrical shank of matching diameter, making it compatible with standard drill chucks and right-angle drill attachments commonly used in sheet metal and structural fabrication work. Typical applications include airframe assembly, HVAC duct framing, electrical enclosure drilling, and light structural work where cobalt hardness is needed to maintain cutting edge life.

Key Features

• Cobalt tool steel construction provides heat resistance and edge retention when drilling hard metals
• 135-degree split point is self-centering, eliminating the need for a center punch on most metals
• Web-thinned, tapered web reduces thrust force and improves chip clearance
• 6-inch overall length delivers extended reach into deep or obstructed workpieces
• Straw finish indicates heat-treated cobalt steel and helps with light lubrication retention
• Right-hand cutting, two-flute spiral geometry for standard drill press and handheld use
• Meets NAS 907 standard

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with standard 3/32-inch straight-cylindrical shank drill chucks and right-angle drill attachments used in metalworking and structural applications.

Installation Notes

Installation should be performed by qualified machinists, aircraft mechanics, or metalworking tradespeople using appropriate drilling equipment. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before drilling. Use appropriate cutting fluid for harder metals to extend tool life and reduce heat buildup. Inspect the cutting edges before use and replace the bit if chipping or deformation is present.