What is the difference between a nut and a bolt

Nuts and bolts are two common types of fasteners, they each have different structures and uses, the following are the main differences between them:

Definition and structure

Nuts: Also known as nuts, are round parts with internal threaded holes. It is usually used in conjunction with a bolt or screw to tighten or loosen the connection by rotation. The appearance of the nut is generally round, with hexagonal or cylindrical flat head or cap head, which is convenient to rotate using tools such as wrenches.

Bolt: is a fixed connector with external threads, composed of a head and a screw (a cylinder with external threads) two parts. It is usually used in conjunction with a nut (nut) to achieve a tight connection by tightening the nut. The head of the bolt is generally hexagonal, which is easy to rotate and tighten with tools such as wrenches.

Use and function

Nuts: mainly used to fix and connect two or more parts with through holes. By rotating the nut, it can be matched with the external thread of the bolt or screw to achieve the tightening effect. Nuts are also commonly used for positioning, supporting and fixing on shafts and can be tightened to provide a stable connection.

Bolts: Mainly used for mechanical connections that need to be removed or adjusted frequently. It achieves mechanical stability and safety by fastening two or more parts with through-holes together. The bolted connection is removable for easy maintenance and replacement.

Fit mode

Nuts: need to be used with bolts or screws, through its internal thread and external thread to achieve the tightening effect.

Bolt: It needs to be used with the nut (nut), and the bolt can produce a pre-tightening force by tightening the nut, so as to achieve a tight connection.

Material and specification

The materials of nuts and bolts are various, commonly used carbon steel, stainless steel, brass and so on. Different materials of nuts and bolts have different strength and corrosion resistance, suitable for different working environments and conditions. At the same time, they are also available in a variety of specifications to meet the needs of different sizes and fastening forces.

Sum up

Nuts and bolts are two common types of fasteners, and they each have different structures and uses. Nuts are mainly used to fix and connect two or more parts, while bolts are used to achieve mechanical stability and safety. In practical applications, they usually need to be used together to achieve a tight connection by rotating the nut to generate a pre-tightening force on the bolt.