Nut manufacturing process
The manufacturing process of the nut: After the steel is heated, the punching is cut->the processing thread->the nut processing process (for the detailed process, please see the dynamic chart at the bottom of the article)
Nuts are divided into carbon steel, high strength, stainless steel, plastic steel and other types according to different materials.
According to the product standard corresponding to the country's different standard number is divided into ordinary, non-standard, (old) national standard, new national standard, American system, British system, German standard.
Different sizes, the threads are not equally divided into different specifications. Generally, the national standard and German standard are indicated by M (for example, M8 and M16), and the US and English systems use fractions or # to indicate specifications (such as 8#, 10#, 1/4, 3/8).
Through the inner thread, the same size nut and screw can be connected together. For example, the M4-0.7 nut can only be matched with the M4-0.7 screw (in the nut, the M4 finger nut inner diameter is about 4mm, 0.7 refers to two thread teeth) The distance between the two is 0.7mm); the American products are also the same, for example, the 1/4-20 nut can only be matched with the 1/4-20 screw (1/4 finger nut inner diameter is about 0.25 inch, 20 fingers per inch) There are 20 teeth).
Nut specification table
Tag example:
Hex nuts with thread size D=M12, performance class 5, surface treatment, class C:
Nut GB/T41-2000 M12Thread size D=M12, performance class 8, surface treatment, Class A hex nut GB/T6170-2000 M12
Attachment: Dynamic diagram of the manufacturing process of the nut
Steel after heating, punching and cutting
Machining thread
Nut processing process
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