MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert. With an operating temperature range of -65 °C to 200 °C, they are ideal for rugged applications. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, they come in various plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial use, these connectors ensure reliable performance in demanding conditions.