MIL-DTL-38999 Series I connectors feature up to 128 contacts in a sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front and rear wall mount options, along with jam nut receptacles and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in aerospace and military applications. Constructed with high strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they provide reliable performance in demanding conditions. Suitable for box mounting, these connectors, meeting stringent military specifications, are essential components for electrical systems requiring durability and conductivity.