Custom bolt generator

This is a test BOLT GENERATOR. This will generate bolts of different heights and different head sizes.
4/27/16
It now will generate bolts with different widths, heights, and threads per millimeter. There are a problem though. It will not generate bolts with a width over 10 millimeters correctly. This problem can be overcome by designing a small bolt and then sizing it up with another program. If you have suggestions on how to fix this problem, or if you have other suggestions or problems, post