The MIL-DTL-38999/24 (D38999) Series III connectors are designed for harsh environments, featuring wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs. With 9 shell sizes and 54 insert arrangements available, these connectors accommodate a wide range of applications. Utilizing M39029 contacts in various sizes, including 22D, 20, 16, 12, 10 power, and 8 twinax, they ensure reliable connectivity. Constructed from aluminum, stainless steel, or lightweight composite, with options for olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel plating, these connectors offer versatility and durability. Suitable for military and aerospace use, with Boeing BACC approval on select models, they guarantee high performance in demanding conditions.