1cm Bolt, Nut, and Screw

In the absence of an easy way to generate a bolt with both a gear-shaped thread and a diameter and thread angle I decided to let the thread script generate something "reasonably metric".

The bolts have a diameter of 10cm and thread spacing of 2mm. Rather than gear-shaped (which has a number of mechanical advantages but which I don't have a script to do all the work for me) the threads are triangle shaped.

The nut has been scaled up a few percent laterally, which hopefully will make it work with the bolts. If these print, it should be possible to do a lot of the things one does with bolts, screws, and nuts, printably.

The script parameters to duplicate bolts are:
diameter: 10 units
step: 2 units
indent: 1 unit

Blender can make bolts and screws of any length with those parameters. A slightly larger diameter (10.2 or so) with the same step and indent parameters should create nuts, threadings, etc.

Edit: Tweaked the screw's tip a bit: I think it probably would have pri