MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts and environmental sealing. With an 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 multiple plating options, including RoHS-certified finishes. The connector family includes front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, all utilizing M39029 rear release crimp contacts. Suitable for military and industrial applications, they ensure secure and durable electrical connections in demanding settings.