“A nut is a part used for threaded connections, commonly paired with bolts. By rotating, it can be securely fastened in mechanical structures. They are typically hexagonal to facilitate rotation and tightening with wrenches or sockets. Nuts come in various types, including standard hex nuts, square nuts, locking nuts, etc., and are widely used in fields such as construction, mechanical manufacturing, the automotive industry, and more.

In addition to the common hex nuts, there are also specially designed nuts for specific applications or for added safety and performance. Here are a few common nut types:

Square Nuts (Square Nuts): Have a square shape and are typically used where a larger contact area is required or easier to turn by hand.

Locking nuts: Designed with a special structure that allows them to provide higher resistance to loosening after installation, such as nuts with spring blades or locking nuts made of special materials.

Round nut: It has a round shape and is usually used in specially designed mechanical structures or when rotational installation is required.

Aircraft Nut: A high-strength nut used in aircraft and other demanding applications to ensure a secure bolted connection.

Countersunk Head Nut: A nut with a countersunk head design, typically used where a flat surface is required or where the height of the nut protrusion is limited.

Flange Nut: A design with a flange used in applications where a nut is required to be secured to a surface, such as on sheet metal or plastic parts.  Each of these different types of nuts has its own unique design and purpose, and choosing the right nut for a specific application can ensure a secure installation and long-term reliability.