MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for versatile connectivity. With a wide operating temperature range of -65 °C to 200 °C, these connectors are environmentally sealed for reliable performance. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in aluminum shells with options for plating such as gold, electroless nickel, and cadmium-free finishes for corrosion resistance. Utilizing M39029 rear release crimp contacts, they ensure secure and efficient connections. Meeting MIL-DTL-38999 II military specifications, these connectors are suitable for demanding applications requiring rugged and durable connectivity solutions.