MIL-DTL-38999 III (D38999) harsh environment connectors offer rugged performance for demanding applications. Available in various shell sizes and insert arrangements, they feature 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 including olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel, these connectors provide versatility. RoHS-compliant and cadmium-free finishes are available, along with Boeing BACC-approved designs. Ideal for military, aerospace, and industrial use, these connectors ensure reliable connectivity in extreme conditions.