MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and an operating temperature range of -65 °C to 200 °C, they ensure reliable performance in demanding conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility. The plugs, offered in straight, RFI grounding, and standard configurations with a 90-degree cable clamp, come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. Crafted from aluminum, with plating options such as electroless nickel and cadmium finishes, they cater to diverse needs. Meeting stringent military specifications, these connectors are essential for applications requiring rugged and dependable connectivity.