MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, ensuring reliable performance in harsh conditions. With a wide operating temperature range from -65°C to 200°C, these connectors are designed for durability. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax options. The connectors come in high strength aluminum shells with plating options such as electroless nickel and cadmium finishes. Ideal for military and industrial applications, they offer secure bayonet coupling and are RoHS compliant for environmental responsibility.