Plastic Nuts For Children's Slide (PL4)

I recently got a plastic Smoby slide for my niece but it's missing some of the plastic nuts and the threads on the other nuts are also almost completely stripped making it difficult to adequately tighten them.

If anyone has any of these they no longer need and would be willing to let me have them I would be most grateful.

There are nine nuts in total two are missing so I could make do with just two replacements but if anyone had enough to replace them all that would be fantastic.

I'm in the PL4 area I can travel a certain distance to collect them if needed.