MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front and rear wall mount options, as well as jam nut receptacles, they offer versatile connectivity solutions. These connectors, part of the military-specification 38999 Series I, are environmentally sealed and capable of operating in temperatures ranging from -65 °C to 200 °C. Built for durability, they come in high-strength aluminum shells with various plating options, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, in sizes 22D, 22M, 22, 20, 16, and 8, they ensure reliable connections. Suitable for applications requiring conductivity and ingress protection, these connectors are ideal for demanding environments.