The above is a general definition of a bolt. Although there are literally high-strength and ordinary bolts, but the above definition is not what we usually call the essential difference between high-strength bolts and ordinary bolts. In fact, the structural engineering said high strength bolt connection refers to the bolt connection of very high strength and very strong stiffness in two aspects, especially refers to the very strong stiffness.

Mechanical equipment in the bolt connection once slack, will cause the bolt to fall off leading to major safety hazards, or bolt relaxation preload drop leading to bolt connection fatigue life greatly shortened. Therefore, in the design to choose the appropriate anti-loosening measures to ensure that the bolt does not come loose in actual use.

Cost-conscious individuals often seek to reduce expenses by cutting expenses on flat pads or spring pads; in reality, these devices play an essential role in using bolts. Today Pandafastener will introduce flat washers and spring washers.

As a tool commonly used in fixtures, bolts have a wide range of applications, but the long-term use of the same time will bring many problems, such as connection relaxation, insufficient clamping force, bolt rust and so on. In parts processing and production, due to the bolt connection slack, will affect the quality and efficiency of processing. So how to give the bolt anti-loosening?
 

Screw production process and technologyHow is a screw made? Learn more about it below.The production of screws can be divided into seven steps: annealing (pickling), wire drawing (molding), grinding teeth (level surface treatment), heat treatment and level surface treatment.Annealing : First treated