MIL-DTL-38999 Series I connectors offer high performance in harsh environments with up to 128 contacts in an insert. These environmentally sealed connectors have a wide operating temperature range from -65 °C to 200 °C, making them suitable for a variety of applications. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatility in connectivity solutions. With 9 shell sizes and 52 insert arrangements available, they accommodate different requirements with ease. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, these connectors ensure reliable connections. Constructed with high-strength aluminum shells and offered in multiple plating options, such as cadmium and nickel, they meet stringent military specifications. Their RoHS certified finishes make them environmentally compliant. Whether for military, aerospace, or industrial use, MIL-DTL-38999 Series I connectors deliver durability and performance in demanding conditions.