MPCNC IE Z Nut Lock M8 - 13mm (stronger)

I had some issues with the strength of the original Z nut lock (that resulted in vertical play) so I decided to design a stronger part.

I have done away with the anti-backlash nut and spring in favour of a "well" that tightly locks an M8 x 24mm coupling nut in place so it cant move in either direction. I've also added an extra (M3 x 12mm) screw to hold it all together securely.

I sourced my coupling nuts locally, but they are the same dimensions as these... https://www.fastenal.com/product