MIL-DTL-38999 Series I connectors are high-performance solutions for demanding environments, featuring up to 128 contacts in an insert. With environmental sealing and a broad operating temperature range of -65 °C to 200 °C, these connectors ensure reliable functionality in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate different contact sizes, including M39029 rear release crimp contacts. The connectors, crafted from high-strength aluminum, come in a range of plating options such as cadmium and nickel, meeting diverse application needs. Their rugged construction, bayonet coupling, and compatibility with wall mount and jam nut receptacles make them ideal for military and industrial applications requiring secure and durable electrical connections.