The MIL-DTL-38999 Series II connectors are designed for rugged environments, offering reliable connectivity with 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 mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. With 52 insert arrangements and M39029 rear release crimp contacts, they provide flexibility in configurations. Made with aluminum shells and available in different plating options including cadmium and nickel, they ensure durability and corrosion resistance. Designed for military specifications, these connectors are ideal for applications requiring robust performance in harsh conditions.