The "For redrilled holes that still don't match" brought back some memories!
Years ago I did design work for a company that made earthmoving equipment accessories. I was designing a new ripper shank for the back of a dozer and working from a print that had been furnished by the US Navy.
The person who did the Navy drawing obviously had access to some "secret technology" because the drawing showed a "U"-shaped lifting eye attached to the top of the ripper shank and the drawing indicated that both legs of the "U" were threaded into the ripper shank! Really? How the heck do you thread in two legs of a "U"?
It had to be the same technology used in your bolt for redrilled holes!
