MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options including front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they provide versatile solutions for a wide range of applications. Constructed with high strength aluminum shells and available in different plating options, such as cadmium-free finishes, these connectors ensure reliable performance in demanding conditions. With a wide temperature range of -65 °C to 200 °C, they are suitable for use in extreme environments.