The MIL-DTL-38999 III (D38999) harsh environment connectors offer robust connectivity solutions with wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs. Featuring 9 shell sizes and 54 insert arrangements, they accommodate M39029 contacts in various sizes for optimal performance. Available in aluminum, stainless steel, or lightweight composite shells, with plating options such as olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel, these connectors ensure durability and reliability in demanding applications. RoHS-compliant and Boeing BACC-approved designs are also offered, making them suitable for a wide range of industries.