Component sources:
- McMaster-Carr is an excellent source for not only ordering limited to bulk quantities of screws, bolts, fittings, and assorted hardware-type items, but also for looking up information on the sizes of screws, bolts, fittings, and assorted-type hardware. Mcmaster-Carr also has a very broad library of 3D models covering most of their catalog.
- Digikey is a comprehensive source for electronics components with excellent customer service.
Material Sources:
- Wikipedia provides a quick starter on material selection by their common uses.
