Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4179941.

I needed to pass a power cable into a plastic bin, so I created this passthrough that has an inner and outer section that screw together, so no hardware. Did not need environment-tight, so created with a 20mm (just over 3/4") diameter opening. Intended for a bin with ~.5mm thickness wall.