The steel zinc-plated clothesline hook measuring 7 1/4 inches is a medium-duty fastener commonly used for securing clotheslines. It features a longer threaded shaft designed to pass through a metal post, with two nuts that can be adjusted on each side to keep the line taut. This type of hook is not limited to clotheslines and can be utilized for various hanging purposes. The zinc plating provides some level of corrosion resistance.