MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed, with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. The high strength aluminum shells come with plating options such as cadmium and nickel for corrosion resistance. These connectors, meeting military specification MIL-DTL-38999 I, are ideal for applications requiring durability and performance in challenging conditions.