The MIL-DTL-38999 Series I connectors feature up to 128 contacts contained in an insert, offering reliable connectivity in harsh environments. These circular connectors are environmentally sealed and have an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they come in high-strength aluminum shells with plating options including gold, electroless nickel, and cadmium finishes. With options for wall mounting and jam nut receptacles, they ensure secure and durable connections. These connectors, compliant with military specifications, are ideal for applications where rugged performance is essential.