It is another screw created in Blender. I reduced the overhang but still my printer has problem on one side of the screw as you can see in the image.
The file is ok. Maybe you will do it better.
Also I added a nut for it.
At the bottom part the screw is 5 cm wide. The hight is 11.3 cm. It took my ultimaker 4:19 hour to print it.
The nut took 1:49 hour to print. It is 4 cm wide and 2 cm high. It fits around the screw. At the inital you have to twist it a couple times.