Best to use large metal washers, I had to order mine from McMaster Carr to get 3/4 OD and 3/16 ID for use with deck screws because you can't find them in most hardware stores.
I've also read of people using bottle caps or drilled pennies as washers.
Have a nice vacay!
I've also read of people using bottle caps or drilled pennies as washers.
Have a nice vacay!