ASTM A123 for Threaded Studs
I have work that has threaded studs welded to structural member. The work is to be galvanized to A123. Do the threaded studs have to meet A123?
The answer is yes and no. The threads must meet A123 section 5.2.1 Threated Components in Assemblies. The last sentence of the section states that coatings shall conform to the requirements of Specifications A153. So, you must meet A123 but it states you must conform to A153.
To clean clogged threads or remove excess zinc on threads, warm the threaded portion of the anchor bolt with a torch and brush the threads with a wire brush. Care should be taken to avoid overheating of the material beyond the tempering temperature.
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