MIL-DTL-38999 III (D38999) harsh environment connectors offer reliable connectivity in demanding settings. This series features wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs in a range of shell sizes and insert arrangements, accommodating M39029 contacts in various sizes. With options for aluminum, stainless steel, and lightweight composite shells, and plating choices like olive drab cadmium, nickel, and black zinc nickel, these connectors meet diverse application needs. RoHS-compliant and Boeing BACC-approved designs are available, ensuring quality and environmental compliance. Suitable for military and industrial use, these connectors provide secure, durable connections in challenging environments.