Rivet Question from a Newbie

[piperjim]

I've got some questions from a rivet newbie.

Can someone give me a lesson on "how to order the right rivets"? I need to re-seal some windows on my 2002 Scamp. I'm looking at the McMaster-Carr website and I see, in the blind rivets, corrosion resistant blind rivets, sealing blind rivets, high-strength blind rivets, just to mention a few of the more obvious choices.

I see different materials, too.....steel, aluminum, stainless steel, etc. Aluminum with steel mandrel, Then, "dome installed" and "countersunk installed".

Then there are the sizes!!! Diameter is pretty straightforward, but what about head diameter and head height?

And the big mystery to me....the "Lg" dimension as shown on the McMaster-Carr website? How to you select the right size here? If you use a backup washer, don't you have to figure its thickness into selecting the right Lg dimension?

Thanks,