CHICAGO-LATROBE Aircraft Extension Drill: #56, 6" Overall Lg, 135° Point

This NAS-spec high-speed steel drill bit is designed for drilling in tight, hard-to-reach spaces on aircraft structures. Its 6-inch extension and 135° point allow precise hole creation in aluminum and sheet metal, meeting NAS 907 Type B standards for aerospace maintenance and manufacturing.

The CHICAGO-LATROBE 11086 is a #56 aircraft extension drill bit with a 0.0465-inch diameter, 6-inch overall length, 135° point, and black oxide HSS finish. It conforms to NAS 907 Type B and is part of the 406X60 series, designed for aerospace applications.

3G Electric supplies CHICAGO-LATROBE aircraft extension drill bits worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine NAS-spec tooling like the 406X60 (MPN 11086) to your facility, regardless of location.

Choose a drill bit with a length that reaches your work area without excessive overhang. For aerospace work, NAS 907 Type B bits like the CHICAGO-LATROBE #56 offer a 135° split point to reduce walking and a black oxide finish for chip evacuation. Match diameter to your fastener or hole requirement.