The MIL-DTL-38999 Series I connectors offer a robust solution for harsh environments, featuring up to 128 contacts housed in an insert. Designed for durability, they are environmentally sealed and can withstand temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors come in high strength aluminum shells with options for plating, including gold, electroless nickel, and cadmium free finishes. The connectors, with rear box mounting receptacles, meet military specification MIL-DTL-38999 I and are ideal for applications requiring reliable performance in demanding conditions.