MIL-DTL-38999 Series II connectors boast up to 128 contacts in an insert, designed for harsh environments with an operating range of -65 °C to 200 °C. These thin-walled, restricted-length connectors offer various mounting options, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they feature gold-plated, removable crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from aluminum, they come with plating options like electroless nickel and iridescent yellow cadmium, meeting RoHS compliance standards. Ideal for military and industrial applications, these connectors ensure reliable performance with their environment-resistant construction and 500-cycle contact mating life.