MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a rugged insert. Designed for harsh environments, these connectors feature front and rear wall mount options, as well as jam nut receptacles, ensuring secure installations. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for diverse applications. Utilizing M39029 rear release crimp contacts, they provide reliable connections in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax variants. The high-strength aluminum shells come in various plating options, such as electroless nickel and cadmium finishes, meeting different environmental requirements. RoHS compliant versions are available, offering flexibility for diverse projects. These MIL-DTL-38999 I connectors are ideal for military, aerospace, and industrial applications where durability and performance are crucial.