MIL-DTL-38999 Series II connectors offer high performance with up to 128 contacts, designed for harsh environments with an operating temperature range from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, these connectors feature Bayonet coupling for secure mating. With 52 insert arrangements and M39029 rear-release crimp contacts, they ensure reliable electrical connections. Constructed with aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they provide durability and corrosion resistance. Meeting military specification MIL-DTL-38999 II, these connectors are ideal for applications requiring rugged, environmentally sealed solutions.