MIL-DTL-38999 Series I connectors are designed for harsh environments with up to 128 contacts in an insert, offering front and rear wall mount options as well as jam nut receptacles. These environmentally sealed connectors feature RFI grounding plugs, utilizing M39029 rear release crimp contacts in various sizes. With a wide range of plating options available, including RoHS certified finishes, they ensure reliable performance in temperatures ranging from -65 °C to 200 °C. Their high-strength aluminum shells and conductive properties make them ideal for demanding applications.