MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells can be plated with options such as cadmium or nickel for added durability. Offering RoHS-certified finishes, these connectors are ideal for military and aerospace applications.