Panel and Enclosure Hole Plugs: Type - Hole Plug; Mtg Hole Dia.- in - 0.250 in; Mtg Hole Dia.- mm - 6.4 mm; Max. Panel Thickness - 0.062" (1.6 mm); Plug Height - Length - 0.234" (5.9 mm); Plug Head Dia. - 1.140" (29.0 mm); Installation - Push-In; Material - Steel