MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a robust insert. Designed for harsh environments, they provide reliable operation in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, this connector family caters to diverse installation needs. With 52 insert arrangements and M39029 rear release crimp contacts in various sizes, including coax and twinax, it ensures versatile compatibility. The connectors boast durable aluminum shells with plating options such as cadmium and electroless nickel, meeting stringent military specifications. Suitable for aerospace, defense, and industrial applications, they guarantee secure and efficient electrical connections in demanding settings.