MICRO SWITCH™ Premium Large Basic Switches: HS Series Accessory, Panel Mount Mounting Bracket, 11,9 mm [0.470 in] Threaded Bushing with Special Drilled Anodized Aluminum 10,7 mm [0.420 in] Diameter Additional Overtravel Plunger Actuator, For Use with HS Series Switches, Mounting and Bushing Hardware Furnished Unassembled