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 versatile and durable. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in aluminum shells with plating options including light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, catering to different application needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. RoHS certified cadmium-free finishes are also available, making them environmentally friendly. Suitable for military and industrial use, these connectors provide reliable performance in demanding conditions.