MIL-DTL-38999 Series I connectors are designed for extreme environments, featuring up to 128 contacts in an environmentally sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are highly versatile. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. The connectors come in durable high-strength aluminum shells with options for different plating finishes, including cadmium-free choices. Their rugged construction and bayonet coupling make them ideal for military and industrial applications requiring secure and high-performance connectivity.