The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in a durable insert, designed for harsh environments. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they ensure versatile installation. With a wide operating temperature range from -65°C to 200°C, these connectors are suitable for demanding applications. 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, they guarantee long-lasting durability. Suitable for military and industrial use, these connectors provide secure and efficient electrical connectivity in challenging environments.