Description 10-Pin audio cable-mount receptacle with solder cup terminal, gold over copper alloy spring loaded contacts with wire strain relief. Passivated stainless steel shell built to MIL-DTL-10544, mates with U-77/U, U-126/U, U-127/U and U-161/U. connectors are used throughout military radio systems and intercom systems for ground, vehicle, airborne, and naval communications.