Fasteners are mechanical basic parts and are in great demand. Usually, bolts, screws, rivets, etc. are used to ensure safety or generally do not need to consider the influence of temperature in harsh environments or other dangerous working conditions. Commonly used materials are carbon steel, low alloy steel and non-ferrous metals. However, in certain occasions, fastener materials need to meet severe corrosion or high-strength conditions, and many stainless steels and ultra-high-strength stainless steels have emerged as the times require.

With the development of lightweight car bodies, aluminum is widely used in various positions of the car body. Die-cast aluminum is used in the front cabin, rear floor, A-pillar, CD-pillar and other areas, which can effectively realize the connection between the car body and other systems and meet good strength.

For a specific design, which surface treatment to choose is a problem faced by every designer. There are many types of surface treatments to choose from, ranging from plain oil to gold. But the designer should choose the surface treatment that can achieve the purpose economically.

As we all know, bolts are used to connect mechanical parts, and they are also very important to the function of machinery. If the bolt connection is not good, it will directly affect the normal operation of the machine. However, what is distressing is that bolts often break in mass production, and many users do not know what factors cause bolts to break. What are the factors that cause bolts to break? How did the bolt break? How many types of factors are there for bolt breakage? Today we will analyze the reasons.

Various types of fasteners are widely used in automobiles. Almost all fasteners require surface treatment before they can be used. Good corrosion resistance is the most basic requirement for surface treatment of fasteners. In the daily work of fastener engineers, a large part of their work is to deal with the corrosion problem of fasteners.

From July 9th to 11th, 2025, Chuangtuo Jinggong (Jiangsu) Co., Ltd. exhibited its specialized nut products at the Manufacturing World 2025(tokyo). As a professional nut manufacturer, Chuangtuo showcased a wide range of nut products, attracting the attention of many exhibitors with its superior craftsmanship and reliable quality. These nuts excel in precision and durability, and are widely used in various fields, including machinery manufacturing and the automotive industry.