MIL-DTL-38999 Series I connectors boast up to 128 contacts within their inserts, offering robust environmental sealing for reliable performance in harsh conditions. With an impressive operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they feature M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax configurations. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, all housed in high-strength aluminum shells. Plating options range from light iridescent yellow cadmium to black anodized aluminum, with RoHS-certified cadmium-free finishes also available. Designed to meet MIL-DTL-38999 I military specifications, these connectors ensure secure and durable electrical connections in critical environments.