MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, featuring up to 128 contacts sealed for environmental protection. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are designed for reliability in demanding conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Crafted from aluminum, they offer durability and are plated with options like electroless nickel and cadmium finishes. Meeting stringent military specifications, these connectors ensure secure and efficient electrical connections in critical environments.