Staple (fastener)

connecting element for fixing flat items (paper, fabric, foil etc.) to each other or to another item

A staple is a fastener that is usually made out of metal and is used to fasten paper to other paper or paper to special walls called bulletin boards. Some large staples may be used for industrial uses, such as masonry, roofing, corrugated boxes and other heavy-duty uses.

A pile of staples commonly used in the home or office