MIL-DTL-38999 Series I connectors offer robust performance in harsh environments, featuring up to 128 contacts in an insert for secure connectivity. Designed for durability, these circular receptacles are environmentally sealed and can withstand temperatures ranging from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, as well as jam nut receptacles, they ensure versatile installation options. Compliant with military specification MIL-DTL-38999 I, these connectors boast high-strength aluminum shells with multiple plating choices such as electroless nickel and cadmium finishes. Utilizing M39029 rear release crimp contacts, they guarantee reliable connections in applications requiring up to 500 mating cycles. Suitable for demanding environments, these connectors are ideal for aerospace, defense, and industrial applications.