MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. With front and rear wall mount options, jam nut, and box mount receptacles, they provide versatile connectivity solutions. These connectors, compliant with military specification MIL-DTL-38999 II, feature a straight plug design with bayonet coupling. Built to withstand extreme temperatures ranging from -65 °C to 200 °C, they ensure reliable performance in demanding conditions. The connectors, made of aluminum with various plating options including cadmium and nickel, guarantee durability and corrosion resistance. Featuring gold-plated removable crimp contacts, they ensure secure and efficient electrical connections. Suitable for military and aerospace applications, these connectors offer a service rating of I and mating life of 500 cycles, making them ideal for critical operations. With RoHS compliant options available, they meet environmental standards while delivering high conductivity and ingress protection, making them essential components in rugged environments.