The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various receptacle styles like front wall mount, rear wall mount, and jam nut, they provide versatility for different applications. With options for straight, RFI grounding, and standard plugs, as well as multiple shell sizes and insert arrangements, these connectors ensure compatibility and reliability. Constructed with aluminum shells and offering plating options including cadmium-free finishes, they meet stringent military specifications for durability. Suitable for industrial and military use, these connectors are ideal for applications requiring secure and high-performance electrical connections in challenging environments.