The MIL-DTL-38999 Series II connectors boast exceptional versatility with up to 128 contacts housed within a rugged, environmentally sealed insert. Designed for harsh environments, these connectors offer reliable performance across a wide operating temperature range from -65°C to 200°C. Available in various mounting styles including jam nut, front and rear wall mount, and box mount receptacles, they feature bayonet coupling for secure connections. The aluminum shells come in a range of plating options, from cadmium finishes to RoHS-compliant alternatives. With M39029 rear release crimp contacts and a selection of shell sizes and insert arrangements, these connectors ensure seamless integration in military and industrial applications requiring robust, high-performance connectivity.