MIL-DTL-38999 Series II connectors offer high-performance connectivity solutions for harsh environments. With up to 128 contacts in an insert, these circular connectors are designed to withstand extreme conditions, featuring environmental sealing and an operating temperature range of -65 °C to 200 °C. Available in various mounting styles such as front wall, rear wall, and jam nut, they provide versatility for different applications. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Crafted from aluminum with plating options including electroless nickel and cadmium finishes, they meet stringent military specifications for durability. Ideal for back panel box mounting, these receptacles, with 61 gold-plated contacts in shell size 24-61, offer high conductivity and resistance to environmental factors, making them suitable for mission-critical operations.