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. Available in 9 shell sizes and 54 insert arrangements, these connectors accommodate M39029 contacts in various sizes, including 22D, 20, 16, 12, 10 power, and 8 twinax. Constructed from durable materials such as aluminum, stainless steel, and lightweight composite, with a range of plating options including olive drab cadmium and nickel, they offer reliable performance in demanding conditions. With RoHS-compliant and Boeing BACC-approved versions available, these connectors ensure high-quality and environmentally friendly connectivity solutions for military and aerospace applications.