MIL-DTL-38999 Series I connectors boast up to 128 contacts housed within an environmentally sealed insert, designed for extreme durability in harsh conditions. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in a wide range of environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they cater to various installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax options. Crafted from high-strength aluminum, they come with a choice of plating options, such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with some models offering RoHS certified cadmium-free finishes. The MIL-DTL-38999 I connectors, characterized by their rugged construction and reliable performance, are ideal for demanding applications requiring secure and efficient electrical connections.