MIL-DTL-38999 Series II connectors, designed for rugged environments, feature up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, these connectors offer various mounting options such as front wall, rear wall, and jam nut receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options including cadmium-free finishes, these connectors ensure reliable performance in demanding applications. With a bayonet coupling and gold contact plating, they guarantee secure connections in military and industrial settings, meeting stringent MIL-DTL-38999 II specifications.