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, these connectors come in 9 shell sizes and 54 insert arrangements with M39029 contacts. Featuring various shell materials like aluminum, stainless steel, and lightweight composite, they also offer a range of plating options including olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel. With RoHS-compliant and cadmium-free finishes, as well as Boeing BACC-approved designs, these connectors ensure high performance in extreme conditions.