MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. 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 styles such as front wall mount, rear wall mount, jam nut, and box mount receptacles, providing versatility in installation. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Available in aluminum shells with options for plating like electroless nickel and cadmium finishes, they meet stringent military specifications. Suitable for applications requiring durability and environmental sealing, these connectors are ideal for aerospace, defense, and industrial use.