MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, ensuring versatile connectivity solutions. Utilizing M39029 rear release crimp contacts, they guarantee secure and efficient connections. These connectors meet military specifications for durability and performance, making them ideal for aerospace, defense, and other demanding applications.