MIL-DTL-38999 Series II connectors offer high-performance connectivity 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 straight, RFI grounding, and standard plugs with a 90-degree cable clamp, they accommodate diverse applications. With 9 shell sizes and 52 insert arrangements utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet stringent RoHS regulations. Operating in temperatures ranging from -65°C to 200°C, these connectors are ideal for military and industrial use, providing durable and efficient performance in demanding conditions.