ThomasNet was known as the Thomas Register. It took up several feet of shelves in the library and was the go-to resources for finding suppliers of products of all sorts. The same is true of the online version.
With a free search, you have access to information about 600,000+ companies and over a hundred million products. You can search by company name, generic product name, or brand name; you can find CAD drawings or news about companies and products.
Other features include the ability to create company comparison lists, a jobs board for engineering and procurement, and links to supplier catalogs.
We have links to ThomasNet on our Research Guides by Subject for Electrical and Computer Engineering, Mechanical Engineering, and Engineering Management.