The 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 reliable performance. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for secure connections. The connectors come in high strength aluminum shells with options for plating, including cadmium-free finishes. Offering RoHS compliance, they are ideal for applications requiring durability and conductivity in demanding conditions.