MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, as well as multiple shell sizes and insert arrangements, they provide flexibility in connectivity. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Made of aluminum with plating options such as cadmium and nickel, these connectors meet stringent military specifications for durability. Suitable for applications requiring reliable performance in challenging conditions, they offer a high level of conductivity and ingress protection.