Slixshot SS nipples for Griswold repro?

[Mgalloway72]

So I'm finally cleaning my dad's Griswold reproduction revolver that sat for over 30 years. In trying to get the nipples out, I've managed to get five out still working on the 6th. When I manage to get this 6th one out, I want to replace them with the stainless steel nipples. And looking at buying them from slixhot, you order them according to your brand pietta or uberti, etc. as the threads are different. But on this gun I've yet to find a Maker's Mark. I have not taken the handle apart as recommended in another post of mine just because I didn't want to have to deal with the springs. But I may have to to find out the maker. If I don't find a maker, is there a way to match up what they offer to these nipples?

 

[1KPerDay]

You can take the nipples to your local hardware store and match the thread size and pitch for one thing.

 

[Malachi Leviticus Blue]

dont forget to measure the length as well.
I would guess that there is a very good chance it was made by one of the numerous smaller makers long gone out of business.