The Hexagon nut is used with bolts and screws to connect and tighten the parts. Type 1 hexagon nut is the most widely used, c-class nut is used for the surface of the rougher, not high precision of the machine, equipment or structure; Class A and CLASS B nuts are used on machines, equipment or structures with relatively smooth surfaces and high precision requirements. Type 2 hexagon nut thickness m thicker, often used for often need to assemble and disassemble occasions. The thickness of the hexagonal thin nut m is thinner, and it is used for the occasions where the surface space of the connected parts is limited.

Life more locknut principle is: use the nut has two parts, each part has staggered CAM, due to internal wedge Angle design of slope Angle is greater than the bolt nut, the combined tightly bite into a whole, when the vibration occurs, the raised portion are performed.the locknut, raising tension, which can achieve perfect effect of locking.

Nut is nut, screw together with bolt or screw used for fastening parts, all production and manufacturing machinery must use a component according to the different material, divided into carbon steel, stainless steel, non-ferrous metals (such as copper) and other major types.