A nut is a nut, a part that is screwed together with a bolt or screw for tightening. It is a component that all manufacturing machinery must use. According to different materials, it is divided into carbon steel, stainless steel, non-ferrous metals (such as copper), etc. Several major types.

1.Type
Nuts are parts that tightly connect mechanical equipment. Through the inner threads, nuts and bolts of the same specifications can be connected together. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts (in the nut , M4 means the inner diameter of the nut is about 4mm, and 0.7 means the distance between the two thread teeth is 0.7mm); the same goes for American-made products, for example, a 1/4-20 nut can only be matched with a 1/4-20 screw ( The inner diameter of a 1/4 finger nut is approximately 0.25 inches, and there are 20 teeth in each inch of a 20 finger nut).

2.Anti-loosening principle
The DISC-LOCK lock nut is composed of two parts, each part has a staggered cam. Since the internal wedge design has a slope angle greater than the nut angle of the bolt, this combination is tightly meshed into a whole. When vibration occurs When the DISC-LOCK anti-loosening nut is moved, the convex parts of the lock nut move against each other to generate lifting tension, thereby achieving a perfect anti-loosening effect.

3.Standard basis
Nuts mainly include national standards (GB), German standards (DIN), international standards (ISO), Japanese standards (JIS), American standards (ASTM/ANSI) and other standards based on attributes. Among them, the national standard, German standard, and Japanese standard are represented by M (such as M8, M16), and the American and British standards are represented by fractions or # (such as 8#, 10#, 1/4, 3/8).

4.Nut specifications

The nut specification table unifies various types of nuts in detail, and uses tables to subdivide some specifications of the nuts. There are many types of nuts, and there are also nuts made of different materials. Each type of nut has different specifications, and each type of screw also has its own mechanical properties and functions.