MIL-DTL-38999 Series I connectors are designed for rugged environments, offering up to 128 contacts in an insert. These connectors are environmentally sealed, with an impressive operating temperature range of -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 connectivity options. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes, including coax and twinax. Constructed with high-strength aluminum shells, they come with a choice of plating options such as cadmium and nickel, ensuring durability in demanding applications. RoHS certified finishes are also available, catering to environmental regulations. Perfect for military and industrial use, these connectors offer reliable performance in harsh conditions.