BUTTON PLUGS WITH FLUSH-TYPE HEADS BPF Series button plugs with flush-type heads can be used for plugging holes in equipment made of sheet metal, such as automobile bodies, tanks, refrigeration...
(Pack of 5) 3 1/2" ID 3.5 inch Hole Plugs Flush Mount Black Plastic Body and Sheet Metal Plugs ' Out Side Head Dia 3.7/8", for Panel Thickness 0.03"-0.11", Height 0.28" ' by SBD suitable for hold ID...