Bolt knob - M5
thingiverse
You can utilize this knob with an M5 bolt as you see fit. I employed it to create a y-axis tensioner. If the hole for the head becomes too constricted, simply heat up the bolt and then insert it into the knob.
Download Model from thingiverse
With this file you will be able to print Bolt knob - M5 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 Bolt knob - M5.