All aluminum rivets?

[BenHud]

Okay, so I understand why it wouldn't be preferable to use rivets on the exterior that have a steel mandrel, but where can I find them that are aluminum only? I've ordered them twice that were billed as "aluminum rivets" and they all had the steel mandrels.

Or maybe it's not that big of a deal to use these?

[Frank's Trailer Works]

Mc Master Carr, Graingers, Fastenal, even Home Depot have aluminum rivets with aluminum mandrels

[Kevin245]

Ditto Frank's vendors. Aluminum shank blind, or pop rivets are common. Lowe's usually carries them as we'll.

[Frank's Trailer Works]

try Jaycee If they don't have it, it does not exist....