The hex nut is a versatile fastener used in a wide range of projects. Its metric threading makes it a high strength fastener commonly paired with class 10.9 metric screws and bolts. A yellow zinc plated finish provides strength and corrosion resistance. A black oxide finish provides little corrosion resistance but is recommended for dry environments. In addition, a hex nut is sometimes called a full height nut, because it does not have a locking feature.

Among nut designs, the hex nut is the most versatile. It can be used to attach metal and wood components to prevent movement. Its design also allows for maximum torque and grip in a threaded fastener arrangement. The hex nut's long sides provide maximum surface area and high leverage to the nut when applying torque. In many applications, the hex nut is the nut of choice for fastening wood or metal components.

One of the benefits of hexagonal fasteners is their ease of use. They are easier to turn than other types of fasteners. For instance, a hexagonal nut can be turned one-sixth of the way to reach the next flat parallel, which makes them much easier to turn. However, a 30 degree turning radius is required to tighten a hexagonal fastener. However, a 30 degree turning radius is a great advantage.