Which pylon is specifically used for nuclear stores on B-52 aircraft?

The pylon specifically used for nuclear stores on B-52 aircraft is the SUU-67. This device is designed to hold and release nuclear weapons safely and effectively from the aircraft. The SUU-67 allows for optimal aerodynamics and ensures the secure transport of the payload during flight, particularly essential for strategic bombers like the B-52 that may be tasked with nuclear mission profiles.

In the context of the other options provided, the BRU-57 is typically associated with the attachment and release of various types of munitions but is not designed specifically for nuclear stores. The ICSMS (Integrated Conventional Stores Management System) relates to weapon management systems and is not a physical pylon. The LAU-68 is a launch system for rocket pods, primarily used for conventional munitions rather than nuclear payloads. Hence, the SUU-67 is the specialized pylon that meets the unique requirements for nuclear ordnance delivery on the B-52 aircraft.