Wanted to mount some Multiboard to the shelving I use with my printers to hold my regular use tools.

Using fasteners was a no-go as I had nothing suitable on hand.

This neat little mount is literally just 3 Multiconnect snapmounts side-by-side with 2 lugs on the back to fit into the safety pin holes on the shelving legs.

Shelves from https://shelvingpro.com.au/

But I have seen other brands sporting similar medium duty shelving with what appear to be the same frames, so likely cross compatible. See the photo with the hole dimensions for more detail.

Holes are 8mm x 12mm (WxH) and spaced 34.4mm apart.

Installing to the shelf upright requires tilting the part up to insert the top of the lugs first, the rotating down using the top edge as a pivot.
They will be pretty firm to get in, but once they snap into place, they're very difficult to remove again.