MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high strength aluminum shells with options for plating including cadmium-free finishes. The family includes front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, all meeting stringent military specifications for durability and performance. Perfect for applications where environmental sealing is crucial, these connectors ensure secure and efficient electrical connections in demanding settings.