The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts sealed within an insert. Operating between -65°C and 200°C, they offer reliable performance in extreme conditions. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure versatile installation options. With 52 insert arrangements and M39029 rear release crimp contacts, they provide flexibility in connectivity. Constructed with aluminum shells and offering plating options such as cadmium and nickel, they meet stringent military specifications. Ideal for applications requiring durability and environmental resistance, these connectors are a reliable choice for demanding environments.