MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in different plating options, including cadmium-free finishes for RoHS compliance. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, providing versatility in installation. Suitable for military and industrial use, these connectors offer reliable performance in demanding conditions.