MICRO SWITCH™ Premium Large Basic Switches: BZ Series, Single Pole Double Throw (SPDT), Split Contact Construction Allowing Two Isolated Circuits, 5 A 250 Vac, 12,7 mm [0.50 in] Threaded Bushing with Sintered Roller Plunger, Binding Head Combination Screw Termination with Integral Lock Washers, Special Hex Nut Furnished Unassembled, Mounting Holes will Accept Pins or Screws, UL, CSA