The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, they offer durability in extreme conditions. Available in various mounting styles such as front wall, rear wall, jam nut, and box mount receptacles, these connectors provide versatility in application. The aluminum shells come in different plating options, including cadmium and nickel, ensuring reliable performance. Compliant with military specifications, these connectors are ideal for aerospace, defense, and industrial applications requiring rugged and reliable connectivity.