MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in a rugged, environmentally sealed design. Operating reliably in extreme conditions, they can withstand temperatures ranging from -65°C to 200°C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors cater to diverse installation requirements. 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 plating options including cadmium and nickel, these connectors ensure durability and reliability in military and industrial applications.