MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors offer front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With an operating temperature range of -65 °C to 200 °C, they are suitable for a wide range of applications. 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 variety of plating options, including cadmium-free finishes. These connectors, meeting military specification MIL-DTL-38999 I, ensure reliability in demanding conditions.