Eagle Cutting Tool AC712-017-I Cobalt Aircraft Drill 17/64

Product Description

The EAGLE CUTTING TOOL AC712-017-I is a cobalt aircraft extension drill bit designed for drilling in hard and abrasive materials where standard high-speed steel bits fall short. Built to a 17/64 inch diameter with a 12 inch overall length, this bit provides the reach needed for deep-hole and through-structure drilling applications. The cobalt construction delivers superior heat resistance, making it well suited for extended use in tough metals without premature wear. Licensed trades and fabrication professionals rely on this geometry for work that demands both precision and durability in difficult-to-reach locations.

This drill bit is used in applications where extended reach is required, including aircraft maintenance, HVAC installation, electrical rough-in, and plumbing rough-in work. The 12 inch overall length allows technicians to drill through wall cavities, structural members, and layered assemblies that a standard-length bit cannot access. It is a common tool in sheet metal work and metal fabrication where cobalt hardness is necessary to maintain edge life through repeated passes in stainless, high-carbon, or hardened steel stock.

Key Features

• 17/64 inch diameter for precise hole sizing in metal applications
• 12 inch overall length provides extended reach for deep or obstructed drilling
• Cobalt construction resists heat buildup and extends cutting life in hard metals
• Aircraft-extension geometry suited for structural and cavity drilling
• Minimum order quantity of 1, available as a single unit

Compatibility

Designed as a standard aircraft extension cobalt drill bit compatible with any 3/8 inch or larger keyed or keyless drill chuck accepting reduced or standard straight shanks in this diameter class.

Installation Notes

This bit is installed and operated by electricians, HVAC technicians, plumbers, and metalworkers using corded or cordless drills rated for metal drilling. Use appropriate cutting fluid or lubricant when drilling hard or stainless steel to preserve edge life. Secure the workpiece firmly before drilling and use consistent feed pressure to avoid bit deflection or breakage. Always wear eye protection and ensure the drill is powered off before changing bits.

Technical Specifications

• Diameter: 17/64 inch
• Overall Length (OAL): 12 inches
• Material: Cobalt
• Weight: 0.24 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: AC712-017-I