This Standard specifies the hexagon nuts for structural bolting - thread specification of M10 ~ M36, style 1, hot-dip galvanized according to GB/T 13912 or sherardized according to GB/T 5067, oversize tapped according to 6AX, property classes of 5, 6 and 8, product grade of A used for dM16. If other technical requirements are required, it shall be selected from current standards (such as GB/T 196, GB/T 197, GB/T 3098.2, and GB/T 3103.1).