On the ensolite Scamps I use 3/16 X 5/8 long aluminum pop rivets on the cabinets when using the acorn nuts as backers. The Rat fur trailer trailers take much longer rivets. The 5/8 long rivets can be bought most anywhere.
Eddie
This is installed with the plastic cap bases under the rivet head.
I thought you were dealing with a 1980
Scamp. Your profile shows 1989 which is a Ratfur trailer. Just call
Scamp because you will have to order the longer rivets from them anyway.