MIL-DTL-38999 Series I connectors offer high-performance connectivity for demanding environments. With up to 128 contacts housed in a rugged insert, these connectors are designed for durability. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatile installation options. Compliant with military specifications, they ensure reliable operation in extreme conditions, with an operating temperature range from -65 °C to 200 °C. Available in 9 shell sizes and 52 insert arrangements, they accommodate various contact types, including M39029 rear release crimp contacts. Built with high-strength aluminum shells and a choice of plating options, including cadmium-free finishes, these connectors offer long-lasting performance. Suitable for applications requiring RoHS compliance, they are ideal for use in aerospace, defense, and industrial settings.