MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for demanding applications. Available in various mounting styles such as front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. The connectors come in aluminum shells with options for plating, including cadmium-free finishes for RoHS compliance. Utilizing M39029 rear release crimp contacts, they ensure reliable connections in aerospace and military systems. With features like environmental sealing and rugged construction, MIL-DTL-38999 Series II connectors provide high performance and durability in challenging environments.