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 and oversize tapped according to 6AX- property classes 5, 6 and 8, and production grade A being used for d≤ M16 and grade B being used for d>M16.
If needs other technical requirements, it shall select from the current standards (for instance GB/T 196, GB/T 197, GB/T 3098.2, and GB/T 3103.1).
GB/T 18230.6-2000 The following standards are cited: