These are created just for fun.
They would be the bolts needed in special situations like having drilled the hole twice, off center, too large at first ect.
Each file is named with a description of how the bolt would be used.

The bolts that will need support are:
Dodging
Double Countersink
Double Sided
Mismatched Holes
Redrilled Holes
Wrong Side Countersink

Print instructions

If you use the gcode it will print all the bolts on a single plate with the minimum amount of support needed.

If you are printing individually, if possible place the bolt head on the bed and add supports as you think they are needed.