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