MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a rugged insert. Designed for harsh environments, these connectors are sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various mounting options including front wall, rear wall, and jam nut receptacles, they feature RFI grounding plugs for enhanced signal integrity. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they provide flexibility for diverse applications. Constructed with high-strength aluminum shells and offered with a choice of plating options, including RoHS compliant finishes, these connectors ensure reliable performance in demanding conditions. Suitable for military and industrial use, they meet MIL-DTL-38999 I specifications for quality and durability.