MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts, housed in a durable environmentally sealed insert. Designed for harsh environments, these connectors feature front and rear wall mount options, along with jam nut receptacles and RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they ensure reliable performance in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Constructed with high strength aluminum shells and various plating options including gold, electroless nickel, and cadmium-free finishes, they meet stringent military specifications. Ideal for applications requiring rugged and dependable connectivity, the MIL-DTL-38999 Series I connectors are a versatile solution for various industries.