Skip to content

Atlas/ TSOA/ TSO-C148

FAA · TSO Authorization

TSO-C148

AIRCRAFT MECHANICAL FASTENERS

Current Issued 03/09/2026 PDF ↗

What is a TSOA?

A Technical Standard Order Authorization is the FAA's permit for a manufacturer to produce equipment that meets a specific TSO standard (avionics, seats, parachutes, GPS receivers, etc.). The TSO sets the performance requirement; the TSOA is the holder's authorization to deliver compliant parts.

Authorized parts (2)

  • Nut – 12 Point, Self Locking

    H22-(*)(*)

  • Self Locking Structural Nut

    F39325-(*)