MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts in an insert and operating temperatures ranging from -65 °C to 200 °C. These connectors come in various configurations, including front and rear wall mounts, jam nuts, and box mounts, offering versatility in installation. Featuring thin walls and restricted lengths, they ensure efficient space utilization. The plugs, available in straight, RFI grounding, and standard options with 90-degree cable clamps, cater to different connectivity needs. With 9 shell sizes and 52 insert arrangements using M39029 crimp contacts, these connectors offer flexibility in design. Crafted from aluminum with plating options like cadmium and nickel, they guarantee durability and reliable performance. Suitable for harsh environments, these connectors meet MIL-DTL-38999 II specifications, making them ideal for military and industrial applications.