MIL-DTL-38999 Series I connectors boast exceptional reliability with up to 128 contacts housed within an environmentally sealed insert. Designed for harsh environments, these connectors can operate in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they offer versatile connectivity options. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. The high-strength aluminum shells come in a range of plating options, including cadmium-free finishes, ensuring durability and compliance. Suitable for military and industrial applications, these connectors guarantee secure and efficient electrical connections in demanding conditions.