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.
In its traditional form, a corkscrew is simply a steel screw attached to a perpendicular handle, made of wood or some other material. The user grips the handle and screws the metal point into the cork, until the helix is firmly embedded, then a vertical pull on the corkscrew extracts the cork from the bottle.