These are what I use 

https://www.thehookuptackle.com/fishing-Japan+Tackle/Split+Rings+and+Snaps

17 hours ago, Scott F said:

Is everybody using the same terminology for the hardware we are talking about? It seems like sone guys might be calling a snap, a snap swivel.

This is a (quality) snap;

 

And this is a (quality) snap swivel;

Great Post.

You got it.  The snap swivel on the bottom goes on my spoons.

I have some of these. TA recommended these ones. He has a good video about swivels.

 

I have used them all the time for the last 20 years or so. never had one 'fail'.

 

I get that larger ones impede action of some crankbaits etc. but I have never had one break or come apart.

 

maybe the ones i'm getting are good quality??