The MIL-DTL-38999 Series I connectors boast up to 128 contacts within their environmentally sealed inserts, designed for rugged applications with an operating temperature range of -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, this connector family offers versatility in connectivity. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in various sizes, ensuring reliable connections. Constructed with high-strength aluminum shells, these connectors come in multiple plating options, including cadmium-free finishes, meeting RoHS compliance. Suitable for demanding environments, they guarantee durability with a service rating of I and are ideal for industrial and military applications.