MIL-DTL-38999 Series II connectors feature up to 128 contacts, offering exceptional environmental sealing and a wide operating temperature range from -65 °C to 200 °C. These harsh environment thin-walled connectors come in various mounting options including front and rear wall mounts, jam nuts, and box mounts. Available in 9 shell sizes with 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from aluminum with plating options like cadmium and nickel, these connectors meet stringent military specifications for durability and performance, making them ideal for demanding applications.