The meaning of the performance grade of hexagonal socket bolts is an internationally recognized standard. Bolts with the same performance grade, regardless of their material and origin, have the same performance, and only the performance grade can be selected for design.

The grading of hexagonal bolts is basically like this, and the prices in the market will definitely vary depending on the grade. The price of high-strength hexagonal bolts is definitely much higher than that of ordinary hexagonal bolts. The four types commonly used in the market are 4.8, 8.8, 10.9, and 12.9.

Hexagon bolts are classified according to the hardness, tensile strength, yield strength, etc. of the screw wire, which is the grade of the hexagon bolt and what grade the hexagon bolt is. Different grades of hexagonal bolts are required for different product materials, and all hexagonal bolts have the following grades: