Check out my collection of Multiboard Models here!
Update 2024-04-23:
Published v2 with 2.6mm head thickness to match Part B Snaps - that way things are kept a standard distance from the tile when push-fitted* in.
Customized the official 20 mm Big Thread, Flat Head, Push-Fit Hole, Bolt by Keep Making. Now it rests against the wall so i can insert a spool holder into the push-fit hole and not have it flex the tile.
If you plan on installing many (i'm up to approximately 100 now), i recommend using this tool to insert and tighten them!