MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an insert and are environmentally sealed for reliable performance. Operating within a wide temperature range from -65 °C to 200 °C, these connectors come in various configurations including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options such as cadmium and nickel, these connectors ensure durability and conductivity. Meeting MIL-DTL-38999 II military specifications, they are ideal for applications requiring rugged and dependable electrical connections.