MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65 °C to 200 °C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, these connectors come with plating options like cadmium and nickel finishes. RoHS-certified versions are also available. Designed for military applications, these connectors ensure reliable performance in harsh environments, making them ideal for aerospace, defense, and industrial use.