I bought a boltless rack. I thought it was easy to install but to the contrary. The rack is loosen easily. Even though I have hammered it so many times, the rack still got loosen.
So I decided to rivet the rack and use screw washer to ensure the rivet doesn’t move due to the big hole. Only after that the rack become really robust.



Rivet Size
I use two rivets size, one short and one is longer with same hole size. I use those twos because I didn’t have enough rivets for the shorter rivets but of course the longer one has better grip.
5/32″ (hole size) x 3/8″ (grip range) and also rivet size of 5/32″ x 5/8″ can also be used.
