The MIL-DTL-38999 III (D38999) harsh environment connectors feature wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, designed for rugged applications. With 9 shell sizes and 54 insert arrangements, they accommodate M39029 contacts in various sizes, including power and twinax. Available in aluminum, stainless steel, and lightweight composite shells, with plating options like olive drab cadmium and passivated stainless steel, they offer versatility and durability. RoHS-compliant and Boeing BACC-approved versions are also available, ensuring regulatory compliance and quality assurance. Perfect for military, aerospace, and industrial use, these connectors provide reliable performance in challenging environments.