MIL-DTL-38999 Series II connectors offer robust performance with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Crafted from durable aluminum, with plating options including cadmium and nickel, these connectors ensure reliable conductivity. With a wide operating temperature range from -65 °C to 200 °C, they are ideal for military and industrial applications requiring rugged and dependable connectivity.