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The past and Future of self-tapping Screw
Tapping screws only began to be commercialized in 1914. The first design was mainly inspired by wood screws. At that time, it was mainly used for the bonding of iron sheet on the conduit of air-conditioning system, so it was also called tin screw. After more than 80 years of development, it can b...Read more -
What are the manifestations of hydrogen embrittlement of fasteners, why hydrogen embrittlement occurs in fasteners, and how to eliminate hydrogen embrittlement of fasteners
Hydrogen embrittlement mainly occurs on low-alloy high-strength steel, stainless steel and elastic parts, which naturally also include fastener products. What happens when fastener products undergo hydrogen embrittlement? Hydrogen embrittlement of fasteners usually occurs within a few hours of t...Read more -
Introduction of lock washers (double fold lock washers)
lock washer Various machines and components are inseparable from fasteners in connection assembly. Fasteners bring convenience to the machinery industry, but they also have an inevitable weakness, that is, they will loosen by themselves in severe vibration, causing damage, disintegration or even ...Read more -
The difference between grade 4.8 bolts and grade 8.8 bolts.
The standard values of 4.8 and 8.8 are based on the characteristics of the data, the better the performance. 1. Class 4.8 bolts are made of raw round steel. The specification and model is not accurate enough to resist bending deformation when connecting, but it is convenient to install and has lo...Read more -
The “growth” history behind a screw
A small screw, although small, is indispensable in daily life. In electronic products, mechanical products, digital products, electrical equipment, electromechanical machinery and other products. Screws are used in ships, vehicles, water conservancy projects, and even chemical experiments. This a...Read more -
Why Fastener Enterprises Develop to Industrial Clusters
In the report of the “Twenty National Congress” held not long ago, it was pointed out that it is necessary to speed up the construction of a manufacturing power, a quality power, a space power, a transportation power, a network power, and a digital China. Emphasize the development of ...Read more -
Is this the hexagon bolt you know ？
Hexagon head bolt is a kind of commonly used mechanical screw. The utility model has the advantages of easy disassembly and non sliding. Hexagon wrenches are usually 90 degrees long at one end and short at the other. Using short screws to hold the long side can save a lot of force and tighten the...Read more -
How bolts are divided into strength grades
How bolts are divided into strength grades: The performance grades of steel structure connecting bolts are divided into more than 10 grades, such as 3.6, 4.0, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9. A specific meaning of a bolt grade is, for example, a bolt of grade 4.8 rep...Read more -
China foreign trade import and export in the first eight months increased by 10.1% year-on-year
According to data released by the General Administration of Customs on the 7th, in the first eight months of this year, the total import and export value of my country's trade in goods was 27.3 trillion yuan, a year-on-year increase of 10.1%. Specifically, my country's e...Read more -
Fastener market demand continues to increase, industrial clustering is one of the mainstream trends in its development
China is the largest producer of fasteners in the world. In recent years, the output of domestic fasteners has shown a fluctuating growth trend. The report shows that the output of metal fasteners in my country will increase from 6.785 million tons in 2017 to 7.931 milli...Read more