MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front and rear wall mount as well as jam nut receptacles. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections with options for RoHS compliant finishes. Constructed with high strength aluminum shells, they come in plating variants such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. Ideal for military and industrial applications, these connectors guarantee reliability with their durable design and conductivity.