The MIL-DTL-38999 Series II connectors boast a rugged design ideal for harsh environments, with up to 128 contacts housed within an insert. These environmentally sealed connectors can withstand temperatures ranging from -65°C to 200°C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from durable aluminum, they come with plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, catering to a range of application needs. With RoHS certified cadmium-free finishes available, these connectors ensure both performance and compliance in critical military and industrial settings.