Hy ttodd, I'll give you lots of info, you decide what you want to do.
All the following are EUCLID part numbers.
3/16 x 3/8 head x 1/2 long semi tubular brass rivet P/N 7-8B
3/16 x 1/2 head x 1/2 long semi tubular brass rivet P/N 8-8B
3/16 x 3/8 head x 7/16 long semi tubular steel rivet [brass plated] P/N 7-7S
3/16 x 1/2 head x 1/2 long semi tubular steel rivet [brass plated] P/N 8-8S
brass brake bolts 3/16 x 1 comes with washer, lock washer, and nut P/N E-633X
brass brake bolts 3/16 x 1 comes with washer and keps nuts P/N E-917X
steel brake bolts 3/16 x 1 comes with washer, lock washer, and nut P/N E-988X
my vote is for the brass brake bolts P/N E-917X I'm used to working with those, but you decide, hope this helps.