MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With operating temperatures ranging from -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they come with M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells are plated with options like cadmium and nickel for corrosion resistance. Suitable for military and industrial applications, these connectors provide durable and conductive solutions for demanding environments.