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 boast a wide operating temperature range from -65 °C to 200 °C. Featuring various receptacle options including front wall mount, rear wall mount, and jam nut, they provide versatility for different applications. With 9 shell sizes and 52 insert arrangements available, these connectors use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Their high-strength aluminum shells can be plated with options such as cadmium or nickel, meeting diverse industrial needs. RoHS certified finishes are also available for environmentally conscious applications. Perfect for military and industrial use, these connectors ensure reliable and durable performance in demanding situations.