Chat with our AI personalities
it was used to tighten or loosen a screw
It can be used to tighten or loosen the screw as well. Flat head screwdriver is hard to turn the screw with quarter inch wide head. The thickness of the slot of the screw and the thickness of the screwdriver should match. The perfect match of thickness enables you tighten it tightly.
A screw may be used to fasten materials such as wood or metal to each other. Sometimes, a screw is left protruding from the surface of a wall, to be used as a portrait-hanger.
there is know ex: a screw is a screw
Cast iron is the material often used to design screw jacks because of its strength.