Hot-dip galvanized bolts are used to protect a relatively good surface from rust, but in the face of natural weathering and corrosion, they also seem to rust. In order to avoid this phenomenon, the following measures should be taken.

Nuts are parts that are closely connected to mechanical equipment.

In addition to various metallic materials, non-metallic materials such as plastics and fiberglass are also widely used. Hardware products play an important role in the survival and development of human beings.

The anti-loosening lock nut uses a unique 30° wedge thread technology, preloaded and locked internal (female) thread. It can resist lateral vibration, which cause thread loosening. Compared with the standard thread,It has a uniform load,and no need  any other locking devices: such as locking washer,......

When conditions permit, we recommend the Ambrose Transverse Vibration Test Metho, However,in specific applications On-site testing is the most reliable and direct way.

No. As long as the bolt meets the national standard, the thread accuracy of the bolt must be 6g or above,and the decarbonisation of the thread tip must meet the national standard. (See Table 10)