MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high strength aluminum shells with plating options including cadmium and nickel. The receptacles, including front and rear wall mount options, are ideal for military and aerospace applications, ensuring secure and durable connections. With RoHS certified finishes, they meet environmental standards while providing excellent conductivity and ingress protection.