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The EAGLE CUTTING TOOL A712-026-I is a high-speed steel (HSS) aircraft extension drill bit designed for deep-reach drilling applications in metal, wood, and composite materials. With a 13/32-inch diameter and a 12-inch overall length (OAL), this bit provides the reach needed to access recessed or hard-to-reach bore locations that standard-length bits cannot serve. The extended shank allows technicians and tradespeople to drill through structural assemblies, panels, and framing without disassembling surrounding components. HSS construction delivers adequate hardness and heat resistance for production-rate hand-drill and drill-press use.
This aircraft-length drill bit is used across a range of trade and industrial applications including HVAC installation, sheet metal fabrication, aircraft and aerospace maintenance, electrical rough-in, plumbing, and general construction. The 12-inch OAL is the standard length classification for aircraft drills, making it a direct fit for jobs requiring extended reach through deep structural members, wall cavities, or stacked panel assemblies. A 13/32-inch diameter is commonly specified for bolt-clearance holes, anchor points, and conduit or fitting pilot holes.
Designed as a standard aircraft-length HSS drill bit compatible with 3/8-inch and 1/2-inch keyed or keyless drill chucks commonly used in hand drills, right-angle drills, and drill presses.
Secure the bit firmly in the chuck before use and verify there is no lateral runout before beginning a bore. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and reduce heat. Always wear eye protection and secure the workpiece to prevent movement. Follow applicable site safety standards and tool-manufacturer torque guidelines for the host drill.
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