The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. Made of high-strength aluminum, they offer durability and come with multiple plating options including electroless nickel and cadmium finishes. With options for RoHS compliance, these connectors are suitable for a wide range of applications requiring secure and efficient electrical connections.