MIL-DTL-38999 Series I connectors offer high-performance solutions for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. Designed for durability, these connectors have a wide operating temperature range from -65 °C to 200 °C, making them suitable for a variety of applications. The family includes front wall mount, rear wall mount, and jam nut receptacles, all featuring RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they provide flexibility for different connectivity needs. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax options, these connectors ensure reliable connections. Constructed with high strength aluminum shells and offered in different plating options, such as cadmium-free finishes, they meet stringent military specifications. Whether for military, aerospace, or industrial use, MIL-DTL-38999 Series I connectors deliver robust performance in demanding environments.