MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, offering versatility in applications. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in various sizes, including coax and twinax options. Constructed with high-strength aluminum shells and offered in different plating options such as cadmium and nickel, these connectors ensure reliable performance. RoHS certified finishes are also available. Suitable for military and industrial use, these connectors provide a durable and secure electrical connection solution in demanding environments.