MIL-DTL-38999 Series I connectors provide robust connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they offer a wide operating temperature range from -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 caters to diverse installation needs. With 9 shell sizes and 52 insert arrangements, it accommodates various configurations, utilizing M39029 rear release crimp contacts. The high strength aluminum shells come with options for plating, including cadmium-free finishes for RoHS compliance. Perfect for demanding applications, these connectors ensure reliable performance in critical settings.