The MIL-DTL-38999 Series II connectors feature a robust design with up to 128 environmentally sealed contacts for reliable performance in harsh environments. With an operating temperature range of -65 °C to 200 °C, they offer versatility in various applications. Available in multiple mounting options, including front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure secure connectivity. They come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they guarantee durability and corrosion resistance. Ideal for military and industrial use, these circular plugs with removable crimp contacts provide a reliable solution for demanding situations.