Hexagonal nuts are also called hexagonal nuts, there are many kinds of nuts, there are hexagonal nuts, round nuts, square nuts and so on.
Some standards for nuts are relatively clear.
Some specification size standard, material requirement standard, electroplating standard and so on are quite clear.
And different kinds of nuts also have different standards, a detailed introduction of nut specifications and standards.
As a standard part, it should have its own general specifications for hexagon nuts, common standards are: GB52, GB6170, GB6172 and DIN934