Rivets

Rivets are permanent two-part metal fasteners for structural joins that will never need to open. Chicago screws are threaded two-part fittings that can be removed and replaced — used where the connection may need to be undone. Snaps are press-stud closures for bags, pouches, and flaps that open and close repeatedly. Each has a specific function; the right choice depends on whether the fitting needs to be permanent, reversible, or a repeated-use closure.