Czecman, those were called french locks and were also used on exhaust manifolds for years. You can use internal/external tooth washers(also called star locks)that hold up well. Your local hardware store should have them. I would not use locktite on flywheel bolts.
Wanted Good Woman:
Must be able to cook , clean , sew , tune engines and polish trucks. Must have old Stovebolt and garage. Please send picture of old Stovebolt and garage.
| 
