Standard Steel Blind rivets have a steel rivet and mandrel and large flange diameter. The 1/8” large flange rivet has a .390” OD.
Step Drill Set
Closed End Blind Rivet, 1/8″ (.125″ OD)
Closed End Blind Rivet, 3/16″ (.1875″ OD)
Aluminum Pop Rivet, Large Flange, 1/8″ (.125″)