The MIL-DTL-38999 III (D38999) harsh environment connectors feature wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, designed for rugged applications. Available in 9 shell sizes and 54 insert arrangements with M39029 contacts in various sizes, including power and twinax options. Constructed from aluminum, stainless steel, or lightweight composite materials, with a range of plating options such as olive drab cadmium and nickel. RoHS-compliant and Boeing BACC-approved designs ensure high-quality performance, making them ideal for military and aerospace use. Conductive and environment-resistant, these connectors guarantee reliability in demanding conditions.