The 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 of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Constructed with aluminum shells and offering options for plating finishes, such as electroless nickel and cadmium, they ensure durability and reliability. Compliant with military specification MIL-DTL-38999 II, these connectors are suitable for use in aerospace, defense, and other rugged industries.