MIL-DTL-38999 Series II connectors boast up to 128 contacts within their environmentally sealed inserts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring various receptacle styles including front and rear wall mounts, jam nuts, and box mounts, these connectors offer versatility in connectivity. Available in 9 shell sizes and 52 insert arrangements, they utilize durable M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options such as cadmium and nickel, these connectors ensure reliable performance in demanding applications. With RoHS certified finishes, they meet environmental standards while providing secure, high-quality electrical connections.