The MIL-DTL-38999 III (D38999) harsh environment connectors offer rugged reliability for demanding applications. Available in wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, they come in various shell sizes and insert arrangements, accommodating M39029 contacts in sizes 22D, 20, 16, 12, 10 power, and 8 twinax. With options in aluminum, stainless steel, and lightweight composite shells, and plating choices like olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel, these connectors meet diverse needs. Featuring RoHS-compliant and cadmium-free finishes, as well as Boeing BACC-approved designs, they ensure high performance in military and aerospace settings.