Speedy nuts (or self cutting nuts as they are called now?) for bonnet emblem

[Roybeth]

 I have the old ones but they are looking pretty old and nasty so was hoping to get some nice new shiny ones but can only find 1/8" speedy nuts which are too small.

Does anyone know where I can source them, think they'll be 3/16.

TIA

[JOX515]

I think I have some in my left overs stash - will let you know.  Cheers, Graeme