TOLCO Fig. 74 structural attachment of a branch line restraint assembly meets the requirements of NFPA 13 for sway bracing of fire sprinkler systems. It can be used with multiple types of fasteners to attach to concrete, steel or wood structures, and it fits both 3⁄8″ and 1/2″ all threaded rod. It is UL listed as a restraint for lateral bracing and FM approved as a sway brace attachment.