Aerowoof's response is correct.

I'll add that if you can find nylon bolts the correct length, they will fit better than one that is cut down. It is a chore to get a nylon bolt clean on the end after cutting it down. If you do cut it, use a razor saw and cut it as square as you can and don't over heat it and casue the blade to bind. Once you have the clean cut use a sanding block or fine file and champfer the end of the screw at a 30 degree angle. Do this stroking from the Od to the center so any flashing left will be in the center of the screw not on the threads.. Hardware store nylon bolts seem to be the toughest to clean up, and the Dubro black bolts seem to be the easiest. Last, don't make the mistake of using a die to try and clean the threads. It just makes a mess of things.

Don