MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts housed in an insert, designed for harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, they ensure secure installations. Compliant with military specification MIL-DTL-38999 I, these circular receptacles guarantee reliable performance in demanding applications. With a wide operating temperature range from -65 °C to 200 °C, they are suitable for various environments. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating diverse connectivity needs. Utilizing M39029 rear release crimp contacts, including sizes 22D, 22M, 22, 20, 16, and 8, they ensure efficient signal transmission. Constructed with high-strength aluminum shells and available in different plating options like electroless nickel and cadmium finishes, they offer durability and corrosion resistance. Whether in aerospace, defense, or industrial settings, these connectors provide a dependable solution for critical applications.