Use the hex nuts that came with the RGB LED button. An additional o-ring is 3d printed in flexible filament. The o-ring helps to secure the hex nut onto the threading of the button. Without it, the hex nut cannot be fully seated into the hilt to panel mount the button.
Install Cables in Hilt
Start by insert the two cables from the button through the hole for the button in the hilt.
Pull the two cables through the top opening of the hilt.
Install Hex Nut and O-Ring
First, insert the two cables through the o-ring. Then, slip the hex nut over.
Double check the order is correct. First the o-ring, then the hex nut. Got it? Ok!
Thread Cables in Hilt
Begin to insert the two cable back into the hilt.
Ensure the hex nuts are position so they can be fitted onto the button.
Use both hands to maneuver the cables through the hilt while maintaining the o-ring and hex nut.
Secured Button to Hilt
Begin to panel mount the button by pushing it into the hole in the hilt. Insert the o-ring onto the threading. Then, fasten the hex nut onto the button until it has a tight fitting.
Tweezers can be used to help grab hold of the hex nut.