A weight storage peg for supporting free weight plates from an exercise superstructure includes a bar extending from a fastener. An exterior surface of the bar is provided by a nylon casting around a cylindrical tube weldment. The nylon casting tapers from a wider portion adjacent the free end to a narrower portion nearer the fastener. The nylon casting also provides a mounting flange around the head of a female threaded mounting bolt, with the female threaded mounting bolt welded to a cylindrical tube to form the cylindrical tube weldment.