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 25) 1/4" (0.25 inch) Flush Mount Black Plastic Body and Sheet Metal Hole Plug ' For ID Hole 1/4" - For Panel Thickness 0.02"-0.07" Head Diameter 1/2" ' by SBD