MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With an operating temperature range of -65 °C to 200 °C, they are ideal for demanding applications. Available in various shell sizes and insert arrangements, these connectors come in high strength aluminum shells with options for different plating finishes, including cadmium-free choices. They offer reliable connectivity with M39029 rear release crimp contacts, suitable for sizes 22D, 22M, 22, 20, 16, and 8. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, all meeting MIL-DTL-38999 I military specifications for performance and durability. With features like bayonet coupling, gold contact plating, and environment-resistant construction, these connectors ensure secure and efficient electrical connections in critical environments.