Hex head cap screws are threaded fasteners with hexagonal heads that have six sides and no indentations. Socket wrenches are used to install and remove these screws, which allow for more torque than standard circular screws. They are available in a number of materials and finishes, including black oxide, zinc plated, zinc yellow, armour coated, hot dipped galvanised, and chrome coated, and do not require a nut for attachment. Depending on the type of environment in which they are installed, coated screws have varied degrees of corrosion resistance. Hex head cap screws are used to anchor objects within or against other objects in order to prevent them from loosening. These screws can be threaded completely or partially.
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