The MIL-DTL-38999 Series II connectors are built for rugged environments, featuring up to 128 contacts in an insert and durable aluminum shells. With a wide operating temperature range from -65 °C to 200 °C, they offer reliable performance in extreme conditions. These connectors come in various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, providing flexibility for different applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Available with RoHS certified finishes, such as electroless nickel and cadmium olive drab, they meet stringent environmental standards. Designed for military specifications, the MIL-DTL-38999 Series II connectors are ideal for aerospace, defense, and other demanding industries.