Place all your materials into a small dish or bowl. This will keep everything from rolling around while you are creating this Nuts About You keychain.
Place your threaded bolt on your work surface. Be sure that you are using a threaded bolt that has a loop on one end so that you can attach it to a key ring.
Use fasteners to screw on your nuts. First, screw on your threaded square nut. Next, your brass hexagon nut followed by a wing nut. Finish with the cap.
Attach your finished product onto a plain circle key ring.