Eagle Cutting Tool AC700-128-I Cobalt Aircraft Drill 28x6 in

Product Description

The EAGLE CUTTING TOOL AC700-128-I is a cobalt aircraft extension drill bit built for drilling through tough materials in tight or deep-reach applications. The extended 6-inch overall length (OAL) allows access to recessed or confined areas that standard-length bits cannot reach. Cobalt construction provides increased heat resistance and hardness compared to standard high-speed steel, making it suitable for drilling stainless steel, hardened alloys, and other hard metals. This bit is intended for use by machinists, aviation maintenance technicians, fabricators, and trade professionals who require reliable performance in demanding drilling tasks.

The AC700-128-I is designed for aircraft-style drilling applications where an extended reach is required. Its 28-size designation corresponds to its drill diameter, and the 6-inch OAL makes it well suited for structural, sheet metal, and maintenance work where standard drill lengths fall short. It is appropriate for both shop and field use across aviation, HVAC fabrication, electrical rough-in, and general metalworking contexts.

Key Features

• Cobalt construction for superior heat resistance and hardness in hard-metal drilling
• Extended 6-inch overall length for deep-reach and confined-space access
• Size 28 diameter for precise hole sizing in structural and sheet metal work
• Aircraft-style geometry suited for metalworking and maintenance applications
• Minimum order quantity of 1 for single-unit purchasing flexibility

Compatibility

Designed as an OEM-style replacement and standard fitment for size 28 aircraft extension drill applications requiring cobalt material and a 6-inch overall length.

Installation Notes

This drill bit is installed by machinists, aviation maintenance technicians, and metalworking professionals using standard drill chucks compatible with the bit shank diameter. Always secure the workpiece before drilling and use appropriate cutting fluid when drilling hard metals to extend bit life and maintain hole quality. Follow applicable workplace safety standards and wear appropriate eye and hand protection during use.

Technical Specifications

• Drill Size: 28
• Overall Length (OAL): 6 inches
• Material: Cobalt
• Weight: 0.37 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: AC700-128-I