MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts sealed for protection. With a wide operating temperature range of -65 °C to 200 °C, they ensure reliability in extreme conditions. Offering various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors meet diverse connectivity needs. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and plated with options like electroless nickel and cadmium finishes, they guarantee durability and performance. RoHS compliant variants are also offered, making them suitable for environmentally conscious applications. Perfect for military, aerospace, and industrial use, these connectors provide high-quality electrical connections in demanding settings.