MIL-DTL-38999 Series II connectors offer high performance with up to 128 contacts, all housed within a rugged, environmentally sealed insert. Designed for harsh environments, these connectors can withstand temperatures ranging from -65 °C to 200 °C. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors feature straight, RFI grounding, and standard plugs with a 90-degree cable clamp, ensuring flexibility in connectivity. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, including 22D, 22M, 22, 20, 16, and 12, they offer versatility in application. Constructed with durable aluminum shells and plated with options like gold, electroless nickel, and cadmium-free finishes, these connectors prioritize both performance and environmental compliance. Their bayonet coupling mechanism and reliable contact mating life make them ideal for military and industrial use, providing secure and efficient electrical connections in demanding settings.