Apr. 1, 2015. TDK Corporation has announced that its Hong Kong-based HDD head manufacturing wholly owned subsidiary, SAE Magnetics (H.K.) Ltd.
You use a wrench to screw, or unscrew a bolt. A screwdriver is for screws. Either way you turn it left. Some bolts have reverse threads and would turn the other way to unbolt.
6 remove the wire nuts that are connecting the wires from the fan and the wires from the ceiling together you may need to pull all the wires out a bit to access the wire nuts but once you have them in hand turn them counterclockwise and they should unscrew