MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. With a wide operating temperature range of -65°C to 200°C, they provide reliable performance in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in various plating options, including cadmium-free finishes, catering to diverse application needs. Suitable for military and industrial use, these connectors ensure durable and efficient electrical connections in demanding environments.