What you get with Foundation may vary depending on your sales person and the deal you make with him/her, so you may not have received it with Pro/E at all. I did.
If the library was provided with your Foundation, it is probably buried somewhere on your hard disk. Here's a quick way to find a directory containing a standard part. Using the Find (or Search) utility of Explorer to look for WA.PRT. That is the generic part for the Type A washer per ANSI B18.1.1 (I think that's the spec number). If you find it, then you're on the right track. Be sure to add all desired directories to SEARCH.PRO so that you don't have to hunt and peck every time you need to get to a fastener.
If you did NOT get the fasteners library with Foundation, then there's an off chance you can download from PTC. If not, then you can always buy it from PTC or RAND. Whatever the price, it's a small price to pay rather than modeling all those parts yourself!
Tunalover