Nuts are nuts that are screwed together with bolts or screws to play a fastening role. According to the different materials, all components that must be used in manufacturing machinery are divided into carbon steel, stainless steel, non-ferrous metals (such as copper) and so on.
Nuts are mainly based on national standard (GB), German standard (DIN), international standard (ISO), Japanese standard (JIS), American standard (ASTM/ANSI) and other standards. Among them, the national standard, German standard and Japanese standard are represented by m (such as M8, M 16), and the scores for American system and British system are # (such as 8#, 10#,14, 3/8).
1, the standard size of stainless steel national standard nut is M 1.6-M64.
Stainless steel national standard nuts include hexagon nuts (GB6 170/DIN934), thin nuts (GB6 172/DIN439), heavy nuts (metric, American), nylon lock nuts (DIN985-DIN982 thick type) and all-metal lock nuts (DIN980M).
Hexagon nuts with flange (GB6 177/DIN6923), hexagon nuts with flange nylon lock nut (DIN6926), four-corner welding nut (DIN928), hexagon welding nut (DIN929), butterfly cap (GB62, DIN3 15, made in USA), K cap, etc.
2. The standard size of alloy steel national standard nut is 5/ 16-4 ".
The national standard nuts of alloy steel include hexagonal nuts (GB6 170/DIN934, GB6 175), hexagon nuts with flange (GB6 177/DIN6923), round nuts (GB8 12) and small round nuts (GB812).
What's the difference between a bolt and a nut?
1, bolts and screws have different appearances. When equipped with a nut, the bolt is cylindrical and threaded, the bolt has six corners and the nut is flat.
2. Bolts and nuts have different functions. When bolts are used, they are generally used as mechanical parts. When used with nuts, they can also strengthen the tightness of bolts with large cylindrical threads. There is no way to use them alone. They must be used with nuts. They are basically used to connect two through holes in the neck.
3. Nuts are closely connected with mechanical equipment, and can only be connected together by internal threads and bolts.
4. The application of bolts and nuts is also different. Bolts are generally used for mechanical, digital electrical and electronic products. Nuts are generally used in cars, trucks, buses, compressors, construction machinery, wind power generation equipment, misappropriation of mechanical fasteners, drilling equipment and casting industries.