MIL-DTL-38999 Series II connectors are designed for rugged applications, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors are suitable for harsh environments. Available in various mounting options including front wall, rear wall, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with options for plating including cadmium and nickel, meeting RoHS compliance standards. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Perfect for military and industrial use, these connectors provide reliable performance with a contact mating life of 500 cycles.