MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with front wall mount, rear wall mount, and jam nut receptacles for secure connections. Operating between -65 °C and 200 °C, these connectors are ideal for a wide range of applications. They utilize M39029 rear release crimp contacts in various sizes, including coax and twinax, ensuring reliable connectivity. With a selection of plating options such as cadmium-free finishes, electroless nickel, and black anodized aluminum, these connectors offer enhanced durability. The high strength aluminum shells provide added protection, making them suitable for demanding environments. Their military-grade construction and environmental sealing guarantee performance in challenging conditions.