Lock nut and hole for screw SCAD module

SCAD module for a locknut and screw hole combination. This is setup for M3 screws and nylon-locknuts (ny-lock nuts).

Note: the picture looks odd because this module is meant to be placed in OpenSCAD code in the ending half of a:
difference()
This means all the elements in this module are removed (subtracted, etc) from your part. The picture shows a part, but this module is meant to make a cavity for a screw, it's locknut and a hole to drop the locknut into.

I designed this to sinc