The 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 of -65 °C to 200 °C, they offer reliable performance in extreme conditions. These connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. The plugs, available in straight and 90-degree cable clamp options, use M39029 rear release crimp contacts for secure connections. Made with aluminum shells and offering multiple plating options, such as electroless nickel and cadmium finishes, they ensure durability and corrosion resistance. Meeting military specification MIL-DTL-38999 II, these connectors are suitable for demanding applications that require rugged and reliable electrical connections.