Spacecraft M39029/4-110, male circular crimp contact, gold plated, size 20, wire cross section 0.25-0.5 mm², AWG 24-20, for MIL-C-26482 Series II, MIL-C-81703 Series III and MIL-C-83723 Series III
Spacecraft SCPT-02E-8-3AP, box mounting receptacle MIL-C-26482 metal circular connector with 3 male gold plated solder contacts size #20. Configuration 8-3A is the same with 8-98 configuration!
Spacecraft MS3181-20C, protection cap for receptacle circular connector MIL-C-26482 series, size #20.
The caps are not used but they have some small scratches (see the picture)!