MIL-DTL-38999 Series II connectors boast a high contact capacity of up to 128 pins within a sealed insert, designed for extreme environments with an operating range from -65°C to 200°C. These connectors, available in various receptacle types such as front and rear wall mount, jam nut, and box mount, cater to diverse installation needs. Featuring straight, RFI grounding, and standard plugs with 90-degree cable clamps, they offer versatility in connectivity. With 9 shell sizes and 52 insert arrangements utilizing M39029 rear release crimp contacts, they ensure reliable performance. Constructed with aluminum shells and offering plating options like cadmium and nickel, these connectors meet stringent military specifications for durability. Suitable for harsh environments, they provide secure and efficient electrical connections.