BoltDepot.com sells a huge variety of fasteners which can be useful in hardware projects. One of the resources they provide is a Illustrated Guide to Fasteners. This is a great way to find the name of the screw or bolt you need to hold your hardware projects together. A printed copy is going into my toolbox.
![PDF available from BoltDepot.com](https://www.baldengineer.com/wp-content/uploads/2013/04/Bolt-Depot-Screenshot-115x150.png)