Half standard for hexagonal nuts

As a standard component, it should have its own universal specifications for hexagonal nuts. Common standards include GB52, GB6170, GB6172, and DIN934. The main difference between them is that the thickness of GB6170 is thicker than that of GB52, GB6172, and DIN934, commonly known as thick nuts. In addition, there is a difference in the opposite side. In the M8 nut series, the opposite side of DIN934, GB6170, and GB6172 is 13MM, which is 1MM smaller than the opposite side of GB52 by 14MM. The opposite side of M10 nuts, DIN934 and GB52 is 17MM, which is 1MM larger than the opposite side of GB6170 and GB6172. The opposite side of M12 nuts, DIN934 and GB52 is 19MM, which is 1MM larger than the opposite side of GB6170 and GB6172 by 18MM. For M14 nuts, the opposite side of DIN934 and GB52 is 22mm larger than that of GB6170 and GB6172, which is 21mm larger. In addition, the M22 nut has a 32mm opposite side for DIN934 and GB52, which is 2MM smaller than the 34mm opposite side for GB6170 and GB6172. GB6170 and GB6172 have the same width across the edges except for their different thicknesses. Other specifications can be used interchangeably without considering thickness.