MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, they offer durability in extreme conditions. Available in various shell sizes and plating options, including cadmium-free finishes, these connectors come in high-strength aluminum shells. With options for front wall mount, rear wall mount, and jam nut receptacles, they accommodate diverse mounting needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Meeting military specifications, these connectors provide reliable performance for applications requiring robust electrical connectivity.