The MIL-DTL-38999 Series II connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility in application. With 52 insert arrangements and M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, they ensure reliable connectivity. Constructed with aluminum shells and offering plating options including electroless nickel and cadmium finishes, they meet stringent military specifications for durability. Suitable for use in demanding conditions, these connectors provide secure and efficient electrical connections.