MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts housed in a sealed insert. Operating between -65 °C and 200 °C, these connectors come in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. Featuring aluminum shells with plating options like cadmium and nickel, these connectors meet stringent military specifications for durability and performance. Perfect for applications requiring secure and high-quality electrical connections in harsh conditions.