MIL-DTL-38999 Series II connectors offer robust performance with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Crafted from aluminum with plating options such as electroless nickel and cadmium finishes, these connectors ensure reliable conductivity. With a wide operating temperature range from -65°C to 200°C, they meet stringent military specifications for durability. Ideal for applications requiring rugged, high-performance connectivity.