Schaerer 3370068156

SCREW PLUG R1/4 BS

A plug is an item that (1) provides a fitted closure for an opening designed to ensure a tight seal such as for a sink or a bottle, or for a hole or a space (2) completes an electrical connection. The plug may be removable (as for portable equipment), require a tool for assembly and removal, or serve as a permanent electrical joint between two points.

A screw is a type of fastener, in some ways similar to a bolt typically made of metal, and characterized by a helical ridge, known as a male thread (external thread). Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull fastened materials together and prevent pull-out.

A screw drive is a system used to turn a screw. At a minimum, it is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it. Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. Other examples include Phillips head screws and screwdrivers, and Allen hex screws and wrenches.