The MIL-DTL-38999 Series I connectors are designed for harsh environments, with up to 128 contacts sealed within the insert. Operating within a wide temperature range of -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors feature front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. Constructed with high-strength aluminum shells, they come with a choice of plating options, including cadmium-free finishes. Meeting military specification MIL-DTL-38999 I, these circular plugs ensure secure and durable electrical connections, making them ideal for demanding applications that require environmental resistance and high conductivity.