Hexagon nuts, as a standard component, should have their own general specifications. Common standards for hexagon nuts include GB52, GB6170, GB6172, and DIN934. The main differences between them are: the thickness of GB6170 is thicker than that of GB52, GB6172, and DIN934, commonly referred to as thick nuts.

Additionally, the differences in the countersunk edges are as follows: In the M8 bolt series, the countersunk edges of DIN934, GB6170, and GB6172 are 13MM, which is 1MM smaller than the 14MM countersunk edge of GB52. For the M10 bolts, the countersunk edge of DIN934 is 17MM, 1MM larger than the 16MM countersunk edge of GB52. In the M12 bolt series, the countersunk edges of DIN934 and GB52 are 19MM, 1MM larger than the 18MM countersunk edge of GB6170 and GB6172.