MIL-DTL-38999 Series I connectors are designed for harsh environments with up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. The connector family includes RFI grounding plugs and utilizes M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they come in multiple plating options, including cadmium-free finishes for RoHS compliance. Ideal for military and industrial applications, these connectors ensure reliable performance in demanding conditions.