MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front and rear wall mount options, as well as jam nut and box mount receptacles, they offer versatility in installation. These connectors, made of durable aluminum, are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various plating options, including cadmium-free finishes, they meet stringent military specifications for reliability. Suitable for applications requiring robust connectivity, they ensure secure and durable performance, with a service rating of E and a mating life of 500 cycles.