The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, they offer robust performance. Available in various configurations like front and rear wall mounts, jam nut, and box mounts, these connectors suit diverse applications. With options for straight, RFI grounding, and standard plugs, they accommodate different cable setups. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Made of aluminum with various plating options including cadmium and nickel, they offer durability. RoHS-certified finishes are also available. Suitable for military and industrial use, these connectors provide reliable connectivity in harsh conditions.