screw for a car wash mop

One of the most important tools in a car wash is the mop. It's a mess if it's broke.
Especially, if only the screw between the shaft and the brushes breaks.

One has to buy a complete new shaft, because this screw is not available separately.

But if you have a 3D printer, you can reprint this screw :-)

I redesigned it in openSCAD and printed it in blue PLA with a slice thickness of 0.2 mm to have a very clean shape.
The result is one of my best prints since I have my mendel - and best