The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert that offers superior environmental sealing. With an impressive operating temperature range of -65 °C to 200 °C, these connectors provide reliable performance in extreme conditions. Available in various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. Constructed with aluminum shells and offering multiple plating options, such as electroless nickel and cadmium finishes, these connectors ensure durability and longevity. Compliant with military specifications, they are ideal for use in military and aerospace applications.