MIL-DTL-38999 III (D38999) harsh environment connectors feature wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs in 9 shell sizes and 54 insert arrangements. Utilizing M39029 contacts, they accommodate sizes 22D, 20, 16, 12, 10 power, and 8 twinax. Available in aluminum, stainless steel, and lightweight composite shells with various plating options including olive drab cadmium and nickel, these connectors meet stringent military specifications. The Series III connectors, such as the MIL-DTL-38999/20, are wall-mounting flange receptacles with removable crimp contacts, featuring a shell size 11 and contact size 16(2). With a durable zinc-nickel finish and C keyway polarization, they offer reliable performance in extreme environments, with a service rating of I and a service class detail of Z.
