MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they accommodate different installation needs. The connectors come in aluminum shells with options for plating, including gold, electroless nickel, and cadmium finishes. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Suitable for military and industrial applications, these connectors meet stringent MIL-DTL-38999 II specifications, offering durability and conductivity with a mating life of 500 cycles. RoHS compliant options are also available.