Grade: 4.8, 8.8, 10.9, 12.9, Material: Q235, 35K, 45K, 40Cr, 20Mn Tib, 35Crmo, 42Crmo, Surface Treatment: Blackened, Electrogalvanized, Dacromet, Hot-dip Galvanized, Galvanized, etc!
The DIN 933 standard is applicable to fully threaded hexagonal bolts with a thread diameter of M1.6-M52, and its product grades are A and B.
The A-level regulations are: d ≤ 24mm and l ≤ 10d or l ≤ 150mm (whichever is smaller); The regulations for Class B are: d>24mm or l>10d or l>150mm (whichever is smaller). Among them, d represents the thread diameter, and l represents the bolt length. Different product grades have corresponding values for opposite edges s, diagonal e, thickness k, and length tolerance.