MIL-DTL-38999 Series I connectors are built for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are designed for durability. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for reliable connectivity. The high strength aluminum shells come in different plating options, including cadmium-free finishes, ensuring quality performance. These connectors, with options like front and rear wall mount and jam nut receptacles, are ideal for military and industrial applications requiring rugged and reliable connectivity.