MIL-DTL-38999 Series II connectors offer high-performance connectivity for demanding environments. With up to 128 contacts in an environmentally sealed insert, they ensure reliable operation in extreme conditions, with a wide operating temperature range of -65°C to 200°C. These harsh environment connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, such as gold, electroless nickel, and cadmium-free finishes, these connectors prioritize durability and performance. Designed to meet MIL-DTL-38999 II specifications, they are ideal for military, aerospace, and industrial applications where rugged, reliable connectivity is essential.