Fastener is the most common type of standard parts in mechanical products due to its variety, specification, large usage and wide application. The reasonable selection of fasteners has also become an important link in the process of product design. Whether the fasteners are used correctly or not is directly related to the functional realization and safe operation of the product. Compared with general fasteners, high-strength fasteners have different requirements in product design, manufacturing, assembly, inspection and maintenance, and play a more critical role in the operation of equipment. With the development of mechanical products to large-scale, automatic, intelligent and other diversified situations, the use of high-strength fasteners as key functional parts is increasing, especially in key occasions and important parts. At present, there are still some problems in the selection and use of high-strength fasteners, such as different opinions and insufficient understanding. It is necessary to do further research work. This paper mainly discusses the use methods of high-strength fasteners for mechanical products, and does not discuss the use of high-strength fasteners instead of general fasteners.

The main purpose of surface treatment is aesthetics and corrosion protection. Because the main function of the fastener is to fasten parts, and the surface treatment also has a great impact on its fastening performance. Therefore, when selecting the surface treatment process, factors such as the torque and consistency of the pre-tightening force of the fastener must be considered.

Self tapping screws are mostly used for the connection between thin metal plates. When connecting, first make a threaded bottom hole for the connected piece, and then screw the self-tapping screw into the threaded bottom hole of the connected piece. So what are the characteristics of self tapping screws? Next, I will introduce the characteristics of self tapping screws in detail for everyone.

If you want to make good use of anchor bolts, then we must first learn about the maintenance of anchor bolts. Friends who are not very knowledgeable about anchor bolt maintenance can come with me to understand it!

Jam nut are nuts that are screwed together with bolts or screws to play a role of fastening. All production machinery must be an original part. jam nut are parts that tightly connect mechanical equipment. Threads, locking nuts and screws of the same specification can be connected together. The advantages and methods of locking nuts are introduced in detail below.

High tensile bolts can withstand larger loads than ordinary bolts of the same specification. The material of ordinary bolts is made of Q235 (A3). The material of high-strength bolt 35 # steel or other high-quality materials is heat treated after being made to improve the strength. So what is the difference between high tensile bolts and ordinary bolts? Let ‘s take a look together.

How to control the accuracy of anchor bolts? What does the anchor bolt do? Let ’s take a look at the control principle and role of anchor bolts together.