MS35649-265B – Nut (Alt. to AN340-B6)

Aerospace castellated (slotted) nut designed for use in conjunction with drilled bolts and cotter pin or safety-wire locking methods. It provides a positive mechanical locking feature that ensures the fastener remains secured under vibration, cyclic loading, and operational stresses typical of aircraft environments. Manufactured to military specification MS35649, it serves as a direct interchangeable alternative to AN340-B6 applications.

Application:
Aircraft structural assemblies, control system linkages, landing gear components, engine accessory installations, and general aviation fastening points requiring safety-wired or cotter-pinned castellated nuts

Function:
Provides a secure threaded fastening that is mechanically locked using a cotter pin or safety wire through the bolt hole, preventing rotation or loosening in high-vibration and high-load aerospace environments