MIL-DTL-38999 Series II connectors are designed for demanding environments, featuring up to 128 contacts sealed for protection. With an operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they provide durability and corrosion resistance. Compliant with MIL-DTL-38999 II standards, these connectors are ideal for military and aerospace applications requiring secure and high-performance electrical connections.