MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts in a single insert. Built for harsh environments, these connectors are sealed to withstand extreme conditions, operating reliably 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, these connectors accommodate various configurations, utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Crafted from high-strength aluminum, they offer durability and are available in different plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial applications, MIL-DTL-38999 Series I connectors ensure reliable performance in demanding environments.