The MIL-DTL-38999 III (D38999) harsh environment connectors offer rugged reliability in various applications. Available in wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, these connectors come in 9 shell sizes and 54 insert arrangements. Featuring M39029 contacts in sizes 22D, 20, 16, 12, 10 power, and 8 twinax, they ensure secure connectivity. With shell material options including aluminum, stainless steel, and lightweight composite, and plating choices like olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel, these connectors cater to diverse needs. RoHS-compliant and Boeing BACC-approved designs are also available, making them suitable for a wide range of industries.