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