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 come in front wall mount, rear wall mount, and jam nut receptacle options. Utilizing M39029 rear release crimp contacts, they ensure secure connections. The high-strength aluminum shells are offered in different plating options, including electroless nickel and cadmium finishes. With RoHS-certified cadmium-free options available, these connectors are suitable for a wide range of applications, providing reliable performance in demanding conditions.