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 of -65°C to 200°C. Available in various mounting styles including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs with a 90-degree cable clamp, they cater to different connectivity needs. These connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring reliable connections. Crafted from aluminum, they come in multiple plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with selections available for RoHS compliance. Compliant with MIL-DTL-38999 II specifications, these circular receptacles guarantee durability and performance in demanding applications.