MIL-DTL-38999 Series I connectors feature up to 128 contacts in an 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 with RFI grounding plugs. Constructed with high-strength aluminum shells, these connectors come in different plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity. RoHS certified finishes are also available, making them suitable for diverse applications requiring durability and performance in challenging conditions.