Parametric Nuts and Bolts

This program generates STL files for nuts and bolts.

Features:
* ISO threads
* UTS threads (UNC/UNF)
* Hex heads
* Knurled heads
* Variable nut/bolt tolerance

I've included a few example STL files. If you want to make your own nuts and bolts you can download the code, build it and run it.

Note: This is not OpenSCAD. It's a program written in Go. The main library and code examples can be found here:

https://github.com/deadsy/sdfx

About Go: https://golang.org/