MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts housed in an insert with environmental sealing. Operating temperatures ranging from -65 °C to 200 °C ensure reliable performance in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, as well as multiple shell sizes and insert arrangements, they provide flexibility in design. Utilizing M39029 rear release crimp contacts in various sizes, these connectors guarantee secure connections. Constructed with aluminum shells and offering plating options including cadmium and nickel, they are durable and corrosion-resistant. Meeting MIL-DTL-38999 II specifications, these connectors are ideal for military and aerospace applications requiring rugged and reliable electrical connections.