MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in a durable, environmentally sealed insert. Engineered for harsh environments, these connectors feature various mounting options such as front and rear wall, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, these connectors ensure long-lasting durability. With a wide operating temperature range from -65°C to 200°C, they are suitable for a range of applications in military and industrial settings.