The MIL-DTL-38999 III (D38999) harsh environment connectors offer rugged connectivity solutions with a variety of options. Available in wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, they come in 9 shell sizes and 54 insert arrangements, accommodating M39029 contacts in various sizes. With shell materials including aluminum, stainless steel, and lightweight composite, and plating options like olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel, these connectors cater to diverse needs. They meet RoHS compliance and Boeing BACC standards, making them ideal for demanding applications where reliability is paramount.