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 offer reliable performance in extreme conditions. Available in various mounting styles such as front wall, rear wall, jam nut, and box mount receptacles, they provide flexibility for different applications. The connectors come in aluminum shells with plating options including iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. Utilizing M39029 rear release crimp contacts, they ensure secure connections. These connectors meet military specification MIL-DTL-38999 II and are ideal for use in demanding settings that require rugged and durable electrical connections.