MIL-DTL-38999 Series I connectors, part of the rugged 38999 I harsh environment connector family, are designed for demanding applications. With up to 128 contacts in an insert, these connectors offer high-density connectivity. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatility in installation. Utilizing M39029 rear release crimp contacts in various sizes, they ensure secure connections. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different requirements. Constructed with high strength aluminum shells and available in multiple plating options, including RoHS certified finishes, they offer durability and environmental resistance. With an operating temperature range from -65 °C to 200 °C, they are suitable for extreme conditions. Perfect for military, aerospace, and industrial applications, these connectors meet MIL-DTL-38999 I specifications.