with one operation
Depends on how many different bolts you have, and how many variations there-of. It'll be one operation per variation.
If you have multiple entities of the same bolt, use hole wizard to create the bolt holes, and one bolt (washers and nut). Then use a derived pattern to populate all holes. Then when you change the original bolt (and maybe the washers and nut). It will update all.
Select all bolts and then you can change their size via component properties.
Retrieving data ...