MIL-DTL-38999 III (D38999) harsh environment connectors, including wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, feature a versatile selection of 9 shell sizes and 54 insert arrangements. Utilizing M39029 contacts in various sizes, these connectors cater to diverse application needs. Available in aluminum, stainless steel, and lightweight composite shells with multiple plating options such as olive drab cadmium and passivated stainless steel, they offer durability and performance in demanding environments. With RoHS-compliant and Boeing BACC-approved designs, these Series 3 connectors ensure reliability in military and aerospace applications.