NAS 1681

Connector, Receptacle, Electrical, Hermetic Solder Mount, Thread Coupling
Data Sheet by Aerospace Industries Association – National Aerospace Standard, 06/01/1980

NAS 1802

Screw, Hex Head, Cruciform Recess, Full Thread A286 Cres, 160,000 Psi Tensile
Data Sheet by Aerospace Industries Association – National Aerospace Standard, 12/05/1996