@mattieu.chaulet: It's like all the classic library functions; We slip into the library the functions we want to keep on a definition model.
@PL: What I currently have is a fastener that positions itself and makes holes automatically. I would just like to include in the library file all the screws at once; as one would do in an assembly with smart component.
@Aurélien Fives: yes it's the only solution that works for the moment; The screws must be redesigned directly in the model. You can't insert it as a derivative part and then make a library file.
It was a bit laborious to redesign all the screws for complex fasteners, but it works.
I am currently in the same prolematics as you, I have to develop working methodologies for our design office with welded construction.... So your question fell tip top!