MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for durability in harsh conditions. With a wide operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme environments. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating including cadmium and nickel. The connectors, compliant with military specification MIL-DTL-38999 I, are ideal for applications requiring secure and robust electrical connections.