MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a durable insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, ensuring versatile installation options. With an operating temperature range of -65 °C to 200 °C, they are suitable for a wide range of applications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating various contact types. Constructed with high-strength aluminum shells and available in different plating options, including RoHS compliant finishes, they ensure reliable performance and environmental resilience. Suitable for military and industrial use, these connectors are ideal for demanding applications requiring secure and efficient electrical connections.