Hex Bolt DIN 933 DIN931 ISO4017 ISO4014

The Bolt of DIN933 is fully thread ,The DIN931 standard is half thread ,they all have grade with 4.8/8.8/10.9/12.9,The 4.8/8.8 is common grade ,this zincplated galvanized coating is common is the fasteners market ,It is widely used in many fields, such as transportation railways, photovoltaic projects, tower projects, household furniture, etc