MIL-DTL-38999 Series I connectors offer exceptional performance in harsh environments with up to 128 contacts sealed for environmental protection. Designed for rugged applications, they feature front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, they come in various plating options such as cadmium and nickel, meeting stringent military specifications. With an operating temperature range from -65°C to 200°C, these connectors ensure reliable performance in diverse conditions.