Eagle Cutting Tool A712-120-I Hss Aircraft Drill Size 20

Product Description

The EAGLE CUTTING TOOL A712-120-I is a Size 20 high-speed steel (HSS) aircraft-extension drill bit with a 12-inch overall length (OAL). Designed for drilling in tight or deep-access applications, the extended shank allows technicians to reach fastener locations that standard-length bits cannot. HSS construction provides the hardness and wear resistance needed for drilling through aluminum, mild steel, and composite materials commonly found in aerospace, HVAC, and sheet-metal work. At 0.07 pounds, it is lightweight enough for extended use with a standard drill motor or pneumatic drill.

Aircraft-extension drill bits like the A712-120-I are used where access depth is the primary constraint. Typical applications include drilling through structural panels, ductwork flanges, equipment enclosures, and bulkheads where a jobber-length bit would not reach. Sheet-metal fabricators, HVAC installers, and maintenance technicians working on aircraft or industrial equipment rely on extended-length bits to complete fastener and rivet hole patterns in confined assemblies.

Key Features

• Size 20 wire gauge diameter for precision hole sizing
• 12-inch overall length for deep-reach and tight-access drilling
• High-speed steel (HSS) construction for durability across metals and composites
• Lightweight at 0.07 pounds for reduced fatigue during extended use
• Compatible with standard drill chucks accepting wire-gauge shank sizes

Compatibility

Designed as a direct-fit aircraft-extension drill bit for use with standard keyed or keyless drill chucks that accept wire-gauge shank diameters. Suitable for hand drills, drill presses, and pneumatic drill motors.

Installation Notes

Secure the bit firmly in the chuck before operation and verify chuck key is removed prior to powering the drill. Use appropriate cutting fluid or lubricant when drilling through steel to extend bit life and maintain hole quality. Wear appropriate eye protection and secure the workpiece to prevent movement during drilling. Inspect the cutting edge for wear or damage before each use and replace if chipping or dulling is observed.

Technical Specifications

• Drill Size: 20 (wire gauge)
• 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: A712-120-I