MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range from -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer versatility for different applications. These connectors, compliant with military specification MIL-DTL-38999 II, come in aluminum shells with options for plating including electroless nickel, light iridescent yellow cadmium, olive drab cadmium, and black anodized aluminum. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable performance. Suitable for use in demanding environments, these connectors are a robust solution for military and aerospace applications.