MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. The connector family includes front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, available in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts in various sizes, these connectors offer reliable connectivity. Constructed with high strength aluminum shells and plating options such as cadmium and nickel, they ensure durability. RoHS certified finishes are also available. Suitable for military and industrial applications, these connectors provide secure and efficient electrical connections.