MIL-DTL-38999 III (D38999) harsh environment connectors offer reliable connectivity in demanding conditions. Available as wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, they come in 9 shell sizes and 54 insert arrangements, accommodating various contact types including power and twinax. With shell materials like aluminum, stainless steel, and lightweight composite, and plating options such as olive drab cadmium and nickel, these connectors meet diverse needs. RoHS-compliant and Boeing BACC-approved designs ensure quality and compliance, making them ideal for military and aerospace applications.