MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an environmentally sealed insert. Operating between -65 °C and 200 °C, they offer durability in extreme conditions. Available in various configurations, including front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure secure connections. Featuring aluminum shells with plating options like cadmium and nickel, they meet stringent military specifications. With RoHS compliant finishes, they guarantee reliable performance, making them ideal for aerospace, defense, and industrial applications.