MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert, designed for harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, they ensure reliable sealing and durability. With a wide operating temperature range from -65°C to 200°C, these connectors are suitable for diverse applications. Available in 9 shell sizes and 52 insert arrangements, they accommodate various contact types, including M39029 rear release crimp contacts. The connectors come in high-strength aluminum shells with options for plating such as cadmium and nickel. Meeting military specification MIL-DTL-38999 I, they guarantee quality and performance in demanding environments.