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 in sizes 22D, 22M, 22, 20, 16, and 8. Offering options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors provide versatility in installation. Constructed with high-strength aluminum shells and offering plating options including cadmium and nickel, they ensure reliable performance in demanding conditions. The RoHS compliant finishes cater to environmental considerations, making them a dependable choice for military and industrial use.