Not sure why my reply isnt showing here (sorry, new here...learning my way with the site)
They are only described as "nickel plate" so Im not sure if steel is the base. There was no storage time. Just made items (like collars and bags with riveted straps, etc), and items were in full use. It was roughly 1-2 weeks that I saw the customers with items again (and saw the tarnished rivets!)...
Are double cap rivets stronger?
Thanks for ur input!