The MIL-DTL-38999 Series III (D38999) harsh environment connectors offer reliable connectivity in demanding conditions. Featuring wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, they come in various shell sizes and insert arrangements, accommodating M39029 contacts in multiple sizes. With options for aluminum, stainless steel, and lightweight composite shells, and various plating choices like olive drab cadmium and nickel, these connectors ensure durability and performance. RoHS-compliant and Boeing BACC-approved designs are available, making them suitable for a range of applications requiring rugged and dependable electrical connections.