[rotorwrench]

It's too bad that unified hardware in this country has become harder to get. There was a time when you could go to any auto parts store and purchase bolts & studs in most common lengths, grades, and even oversizes of shank & thread. I can still get some for the aircraft engines but even those are getting scarce unless the engine is still in wide use.

Studs are set in to a specific torque before bottoming out in the aircraft engines. If they bottom out they will become loose in the bore so oversizes were available to get them to set correctly. I don't think Ford ever did this. I always made my thread clean out tools from old bolt to keep from making the threaded bores too large for new studs or bolts. Ford made some damn good hardware back in the day.