The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed for reliable performance. With an operating temperature range from -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors are equipped with M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring secure connections. Constructed with aluminum shells and offering different plating options such as cadmium and nickel finishes, they meet stringent military specifications. Suitable for use in demanding environments, these connectors provide reliable connectivity in critical operations.