3mm LED Panel Mount

Small version for thin panels, larger version for thick panels. The nut is finger-friendly. Solder the LED to two wires, use heat shrink tube to insulate properly. Then put the LED in the holder and drop a little bit of glue on top of the LED. If needed, use a toothpick to push the glue down. Let dry.

I also use LEDs for mains voltage indicators, see http://www.turbokeu.com/myprojects/acled.htm.