Features and advantages
■Pure medium carbon steel, modulated 8.8 grade, safe and reliable, shear and impact resistance.
■Using the process of first heat treatment and then rubbing teeth, the risk of tooth pattern damage is minimized
■The chamfering design of the bolt thread tail is convenient for screwing in the nut and improves the installation efficiency
■Production standard DIN933, the surface is electro-galvanized 8um, the color is bright and slightly blue;
Hot-dip galvanized 55um, smoothly screwed with the nut