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 52 insert arrangements and M39029 rear release crimp contacts in various sizes, these connectors provide versatility in applications. Constructed with high strength aluminum shells and available in multiple plating options, including RoHS certified finishes, they ensure durability and reliability. Suitable for temperatures ranging from -65 °C to 200 °C, these connectors meet military specifications for dependable operation in demanding settings.