AIA NAS9925

The fasteners are intended for the assembly, repair, and maintenance of the structure of weapon systems (including aircraft and missiles) and supporting equipment.

This specification describes requirements for aerospace externally threaded fasteners (see 6.3) of ultimate tensile stress 180 KSI Ftu and 108 KSI Fsu. It is intended as a replacement for MIL-B-87114 for NAS part standards at the 180 KSI strength level that previously called out MIL-B-87114 as the procurement specification. It is highly recommended that this specification not be called out on any new part standards either at the Standards Development Organization level or at the user community (company standard) level.