MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in a rugged, environmentally sealed design. Ideal 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. Constructed with aluminum shells and offering RoHS certified plating options, such as electroless nickel and cadmium finishes, these connectors ensure reliable performance in temperatures ranging from -65 °C to 200 °C. Suitable for military and industrial applications, they meet stringent MIL-DTL-38999 II specifications for durability and reliability.