Thats a little one
1/2 studs are all the same they just pull the various lengths for a specific engine. We had the same question when Dave called them for advise. They said they provide the fasteners other issues are the builders responsibility. They said there are several ways to address this issue and it is up to the builder to resolve it. Any advise would make them liable. They did say the weak point of the stud was the base of the 1/2-13 thread that I remember was relayed to me . The shaft is almost double the strength. The threads are rolled not cut.
