The MIL-DTL-38999 Series II connectors offer high-performance connectivity for demanding environments. With up to 128 contacts, these circular receptacles are designed for rugged applications, featuring front and rear wall mount options, as well as jam nut and box mount configurations. Operating in temperatures ranging from -65 °C to 200 °C, they provide reliable performance in extreme conditions. Built to military specification MIL-DTL-38999 II, these connectors meet stringent standards for durability and functionality. The aluminum shells are available in various plating options, including cadmium-free finishes, ensuring compliance with RoHS regulations. With removable crimp contacts and bayonet coupling, these connectors offer secure and efficient mating. Suitable for M-rated service class applications, they are ideal for use in aerospace, defense, and other critical industries.