M8 Lock Nuts
thingiverse
Breaking your pivot shaft can be a major setback, especially when you've invested time and resources into printing all the necessary components. To salvage your project, consider repurposing an M8 bolt and a nut as a makeshift pivoting shaft. This might just save the day. In this setup, the bolt and nut serve two purposes: they act as a locking mechanism on one side of the assembly and a thumb wheel on the other.
Download Model from thingiverse
With this file you will be able to print M8 Lock Nuts with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on M8 Lock Nuts.