MIL-DTL-38999 Series I connectors offer robust connectivity solutions with up to 128 contacts housed in an insert. Designed for harsh environments, these connectors are environmentally sealed and can operate in temperatures ranging from -65°C to 200°C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatile installation options. With 9 shell sizes and 52 insert arrangements available, they accommodate various configurations. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax options, these connectors ensure secure and reliable connections. Constructed with high-strength aluminum shells and offered in different plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, they meet diverse application needs. RoHS certified cadmium-free finishes are also available, making them environmentally friendly. Perfect for military and industrial use, MIL-DTL-38999 Series I connectors guarantee durability and performance in demanding settings.