Hidden rivets are rivets on the back pockets of jeans that are covered by denim fabric.
Up until 1937, all rivets on Levi’s jeans were exposed. This caused a lot of problem for cowboys and housewives alike. The rivets would scratch the surface of saddles and furniture. This led to the invention of the hidden rivet.
But as hidden rivets eventually tear their way through even the toughest denim. In the mid-1960s, Levi’s removed rivets on the back pockets of their jeans for good, replaced by bartacks.