MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. With a wide operating temperature range from -65 °C to 200 °C, these connectors are reliable in extreme conditions. They come in various shell sizes and insert arrangements, accommodating M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Crafted from high-strength aluminum, they are available in different plating options, including cadmium-free finishes. With their bayonet coupling and gold contact plating, these connectors ensure secure and durable electrical connections, making them ideal for military and industrial applications.