Eagle Cutting Tool A712-128-I Hss Aircraft Drill

Product Description

The EAGLE CUTTING TOOL A712-128-I is a high-speed steel (HSS) aircraft-extension drill bit with a 12-inch overall length (OAL). Designed for deep-hole drilling applications that standard-length bits cannot reach, this extended drill is built to handle sheet metal, structural steel, aluminum, and similar materials encountered in mechanical, HVAC, plumbing, and electrical trade work. The HSS construction delivers the hardness and heat resistance needed for repeated use in production and service environments. At 0.07 pounds, the bit is lightweight and easy to handle in confined or overhead work positions.

Aircraft-extension drill bits like the A712-128-I are commonly used wherever access depth is the limiting factor — drilling through wall assemblies, HVAC equipment panels, ductwork flanges, electrical enclosures, and structural members. The extended 12-inch OAL allows tradespeople to reach fastener locations that would otherwise require disassembly or awkward bit extensions. This bit is suited for use with standard 3/8-inch or 1/2-inch chuck portable drills and drill presses.

Key Features

• 12-inch overall length provides extended reach for deep or restricted-access drilling
• High-speed steel (HSS) construction resists heat buildup during continuous use
• Lightweight at 0.07 pounds for reduced fatigue in overhead or confined-space applications
• Compatible with standard drill chucks — no special tooling required
• Suited for drilling steel, aluminum, sheet metal, and similar trade materials

Compatibility

Designed as a standard HSS aircraft-extension drill bit for use with 3/8-inch or 1/2-inch chuck portable drills and bench drill presses in HVAC, plumbing, electrical, and general mechanical trade applications.

Installation Notes

Aircraft-extension drill bits are installed and used by HVAC technicians, electricians, plumbers, and general mechanical contractors. Ensure the drill chuck is fully tightened before use and that the workpiece is secured to prevent movement. When drilling metal, use appropriate cutting fluid or lubricant to extend bit life and reduce heat. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.

Technical Specifications

• Overall Length (OAL): 12 inches
• Material: High-Speed Steel (HSS)
• Weight: 0.07 pounds
• Minimum Order Quantity: 1

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: A712-128-I