The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert for reliable connectivity. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with options for plating finishes including electroless nickel and cadmium, meeting RoHS compliance standards. Utilizing M39029 rear release crimp contacts, they ensure secure connections. The Series II connectors are ideal for military and aerospace applications, offering durability and performance in harsh conditions.