MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance. Available in various configurations including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with options for plating such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. RoHS certified cadmium-free finishes are also available. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure connections. Suitable for military and industrial applications, they meet MIL-DTL-38999 II specifications for durability and performance in demanding settings.