MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts sealed within an insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. The connectors come in aluminum shells with plating options including electroless nickel and cadmium finishes. With contact sizes ranging from 22D to 12, they accommodate different requirements. These connectors, compliant with military specification MIL-DTL-38999 II, are ideal for applications demanding ruggedness and durability.