The 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 from -65°C to 200°C, these connectors are built for durability. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they meet stringent military specifications for performance and reliability. Ideal for applications requiring secure electrical connections in demanding conditions.