Cold knowledge about fasteners that you are not aware of

Fasteners have been an indispensable component in production and daily life since ancient times. Although they are small, they play a significant role. In modern society, there are still many small pieces of knowledge in the fastener industry that we do not know. Below, I will tell you!

1. As more and more American funded enterprises enter China, the demand for American screws in China is also increasing, mainly concentrated in the Yangtze River Delta region; Hong Kong was once a British colony, and Hong Kong funded enterprises had a significant impact on the Pearl River Delta. Therefore, before 2002, the demand for British screws in the Pearl River Delta was very high. The Pearl River Delta is mainly developed in light industry, such as lighting fixtures, toys, electrical products, etc. Therefore, they have a high demand for precision electronic screws (small screws).

2. The American screws (with a tooth angle of 60 °) and English screws (with a tooth angle of 55 °) with standard teeth are interchangeable except for 1/2, which can be used interchangeably in other situations (provided that the go/no go gauge inspection is not successful and normal use is not a problem). Because American screws and English screws cannot pass through the go/no go gauge, but they can pass through the nut normally.

3. The United States is a very democratic country that has established many standards for fasteners, including IFI, ANSI, ASME, etc., which all belong to American standards and have a certain influence.

4. The German people are renowned for their rigor and pragmatism. DIN fasteners have a great influence in China and even the world. ISO (international standard) is largely influenced by DIN, and GB (national standard) also draws heavily on DIN. However, the heads of DIN screws are relatively thick and waste materials (compared to Japanese standard small screws).

5. At present, in the fastener market of Chinese Mainland, the demand for GB is far greater than that for DIN, but the demand for GB is on the decline, while the demand for DIN is on the rise.

6. JIS (Japanese Standard) has made a significant contribution in the field of small screws, achieving lean production mainly because Japanese enterprises dominate the world in the home appliance industry, as evidenced by the small and exquisite size of JIS Japan's small screws. So the Japanese standard has a great influence in the field of precision electronic screws.

7. In the mechanical equipment industry, the procurement cost of normal screws accounts for 0.5% -2% of the total procurement cost. From this, we can estimate the quantity of screws purchased by a company based on its total product sales. At the same time, we can also see that fasteners are in a very "fun" position, and business owners usually pay attention to the big end. Our screws are often overlooked and do not receive the attention they should, leading to subsequent quality issues Service and other issues occur frequently.

The above is a summary of the relevant knowledge in the fastener industry by the editor. Isn't it quite interesting