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 configurations, including front wall mount, rear wall mount, and jam nut receptacles, they offer versatility for different applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections. The high-strength aluminum shells come in multiple plating options, such as electroless nickel and cadmium finishes. Meeting military specification MIL-DTL-38999 I, these connectors provide reliable performance in demanding conditions.