MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, these connectors provide versatility in installation. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with aluminum shells and offering plating options such as cadmium and nickel, they meet rigorous military specifications. Each connector, with gold-plated contacts, guarantees high conductivity and durability, making them ideal for aerospace, defense, and industrial applications.