The MIL-DTL-38999 Series I connectors offer rugged performance with up to 128 contacts in an insert, designed for harsh environments with an 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 provides versatility. With 9 shell sizes and 52 insert arrangements, it accommodates various configurations, utilizing M39029 rear release crimp contacts. Constructed with high-strength aluminum shells and available in different plating options, including RoHS-certified finishes, these connectors ensure reliable connectivity in demanding applications.