MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. This versatile connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they accommodate M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with high-strength aluminum shells, these connectors come with multiple plating options, such as electroless nickel and cadmium finishes. RoHS certified options are also available, ensuring compliance with environmental standards. Suitable for harsh environments, these MIL-DTL-38999 I connectors provide reliable connectivity with their durable design and conductive properties.