Ruger Single Six Flatgate Replacement Screws

[Colorado1]

I'd like to replace the three screws from my SS manufactured in 1954. Any idea where I can buy them? Ruger doesn't carry them.

 

[Fox Mike]

Try here:
http://www.gunpartscorp.com/catalog/Products.aspx?catid=8350

 

[Hashknife Hartley]

I take it you mean the 3 action screws, hammer, bolt and trigger. Those early screws typically had machine marks on the heads while the newer ones were smoother as Ruger started finishing stuff better. I've got several sets and some that are in pretty decent shape and would let go of a set for $25. Pics available to show head condition if you're interested.
HH