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. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure secure connectivity. Made with aluminum shells and offering RoHS compliant plating options, including gold, electroless nickel, and cadmium-free finishes, they meet stringent military specifications. Ideal for aerospace, defense, and industrial applications, these connectors provide durability and longevity, with a service rating of 500 cycles. The Series II connectors are essential components for maintaining reliable electrical connections in demanding environments.