MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an insert, designed for harsh environments. These connectors, with an operating temperature range of -65 °C to 200 °C, come in various mounting options like front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering plating options including cadmium and nickel, they ensure reliable conductivity and environmental resistance. Ideal for military applications, these connectors meet stringent MIL-DTL-38999 II specifications, guaranteeing durability and performance in demanding conditions.