Paul Martin wrote:
b) if there was a library of them somewhere to save me drawing them all myself.
You might go to McMaster-Carr's on-line catalog. They have SW models for quite a few of their products.
What standard are you using?
SW doesn't cater for BA, BSF or BSW threads, but the ANSI standard (& others) have metric threads down to M1.2x0.25.
Custom threads can be created.