m3 nut cutout model with openscad code

I needed an m3 nut cutout for a project that I was working on. I could not find an existing openscad model, so I made this. Hope this helps others. I tested this to be printed without supports, in the orientation of the test print - no issue on my mk4 with PLA. 
 

Note, the model is designed to print cleanly without supports. This is why there are the boxes on the top of the nut in the model.

Included files:

• openscad file you can use your projects
• Negative screw cutout that you can use directly.
• Example of usage object (as seen in the photos)