I also added a small plug that goes over the bolt head that eliminates the possibility of shorting if the bolt were to come loose against an earthed chassis. I heated up a torx driver and melted a small star into the plug to hold it in.
The Fusion 360 file is also included if you want to make any other changes.
The author remixed this model.
Essentially the same as Steven Wrights model but uses an M6 x 20mm bolt instead of M5.