MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts within an environmentally sealed insert. Operating between -65 °C and 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, they come in a range of plating options, including cadmium-free finishes for RoHS compliance. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors are ideal for military and aerospace applications requiring durable and reliable electrical connections.