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How does a spanner work?

Shop for Spanners

Spanner grips nut and turns it. A spanner works by gripping a fastener and twisting it clockwise or anticlockwise to tighten or loosen it.
Spanner grips nut by pushing against it creating friction so it moves. The profile of the head (size and shape) fits over, around or into the fastener. When the head is turned, friction (a force that slows down two objects moving past one another) between the profile and the fastener at the contact points causes the spanner to mechanically grip the fastener, providing torque (a turning force) to turn it.
Grab the handle and turn on same plane as nut to turn the nut. To turn the tool, the shaft needs to be turned on the same plane as the fastener. The user does this by gripping the shaft and pulling or pushing it.
Spanners use a lever system to increase the amount of work that can be done. The shaft acts as a lever, magnifying the force input by the user in order to turn the fastener easily.