The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These circular receptacles, available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, offer reliable connectivity. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for demanding applications. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. The high-strength aluminum shells come in different plating options such as gold, electroless nickel, and cadmium finishes, providing durability and corrosion resistance. Meeting MIL-DTL-38999 I military specifications, they guarantee performance excellence in rugged conditions.