MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts within a sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mount types such as front wall, rear wall, and box mount receptacles, they accommodate diverse installation needs. The connectors, made of aluminum, come in 9 shell sizes and 52 insert arrangements, with rear release crimp contacts ensuring secure connections. Plating options include cadmium-free finishes, meeting RoHS certification standards. These connectors, crafted for military specifications, guarantee durability and high performance in demanding applications.