The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with plating options including electroless nickel and cadmium finishes. With RoHS compliant options, they ensure environmental sustainability. Meeting military specification MIL-DTL-38999 II, these circular receptacles provide reliable connectivity in rugged conditions.