MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, these connectors utilize M39029 rear release crimp contacts in various sizes, including coax and twinax options. Constructed with durable aluminum shells and offering multiple plating choices such as cadmium and nickel, they ensure reliable operation in a wide range of applications. RoHS compliant finishes are also available. Suitable for military and industrial use, these connectors provide secure and efficient electrical connections in demanding conditions.