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Nut standard
Oct 16, 2018

For hex nuts, the commonly used standards are: GB52, GB6170, GB6172 and DIN934. The main difference between them is: GB6170 is thicker than GB52, GB6172 and DIN934, commonly known as thick nuts. The other is the difference on the side, the opposite side of DIN934, GB6170, GB6172 in the M8 nut series is 13MM smaller than the opposite side of GB52 14MM, the nut of M10, the opposite side of DIN934 and GB52 is 17MM, The opposite side of GB6170 and GB6172 should be 1MM larger, the nut of M12, the opposite side of DIN934 and GB52 is 19MM larger than the opposite side of GB6170 and GB6172 18MM. For the M14 nut, the opposite side of DIN934 and GB52 is 22MM larger than the opposite side 21MM of GB6170 and GB6172. The other is the nut of M22, the opposite side of DIN934 and GB52 is 32MM, which is 2mm smaller than the opposite side of GB6170 and GB6172. (GB6170 and GB6172 are identical in width except for their different thicknesses.) The remaining specifications can be used without considering the thickness.


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