MIL-DTL-38999 Series II connectors offer superior performance with up to 128 contacts housed within an environmentally sealed insert. Designed for harsh environments, these connectors boast a wide operating temperature range from -65°C to 200°C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Built with durable aluminum shells and plated with options like electroless nickel and cadmium finishes, they ensure reliable conductivity. Perfect for military applications, these connectors meet stringent MIL-DTL-38999 II specifications, offering rugged construction and high performance in demanding environments.