MIL-DTL-38999 Series I connectors boast up to 128 contacts in a sealed insert, designed for harsh environments with an operating range of -65°C to 200°C. Featuring front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they come with plating options such as cadmium and nickel, including RoHS-compliant finishes. Ideal for military and industrial applications, these connectors ensure reliable performance with their durable design and conductivity, meeting stringent environmental standards.