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 units, etc. The plugs can be snapped into holes and easily held into place by a bead until deliberately removed. : : A: 0.26, B: 0.81, C: 0.67, HOLESZ(IN):.61-.63, MTHICK(IN):.06-.08.