The MIL-DTL-38999 III (D38999) harsh environment connectors offer a robust solution for demanding applications. Available in various configurations such as wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs, they provide versatility in design. With 9 shell sizes and 54 insert arrangements, these connectors accommodate different contact configurations, including M39029 contacts in sizes 22D, 20, 16, 12, 10 power, and 8 twinax. Constructed from durable materials like aluminum, stainless steel, and lightweight composite, they ensure reliable performance in challenging environments. The wide range of plating options, including olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel, caters to various industrial needs. Featuring RoHS-compliant and Boeing BACC-approved designs, these connectors meet stringent quality standards. Designed for military and aerospace applications, they offer high temperature resistance up to 200°C and operate reliably even in extreme temperatures as low as -65°C. With features like threaded mating, environment-resistant ingress protection, and conductive contact materials, they guarantee secure and efficient connectivity in critical operations. Perfect for applications requiring EMI/RFI shielding and high durability, these connectors are the ideal choice for mission-critical systems.