What is the DIN 934 specification standard
Metric DIN 934 Hexagon Nuts are the most common standard for metric hex nuts used in many applications where a metric nut is required. DIN 934 standard specifies requirements for M1 to M64 hexagon nuts, assigned to product grade A or product grade B. If in special cases, nut are to comply with specifications other than those given in this standard, e.g. regarding property class, they shall be selected in accordance with the relevant standards.
Dimensions of Metric DIN 934 Hexagon Nuts
What is the ISO4032 specification standard
ISO 4032 is hexagon regular nuts, with threads from M16 up to and including M64, with product grade A for threads D ≤M16 and product grade B for threads D ＞M16.
Dimensions of Metric ISO4032 Hexagon Nuts
What is the difference between DIN 934 and ISO 4032
The nominal range has change significantly.
The height of the nut has changed slightly across many sizes.
Like the DIN vs. ISO Hex Head Cap Screws, the biggest difference is going to be the Width Across the Flats at the M10, M12, M14, and M22 diameters.
Also, the DIN 934 standard has split into 2 ISO standards. Whereas the DIN 934 standard accounted for both coarse thread and fine thread, the ISO coarse thread hex nut is ISO 4032 and the ISO fine thread hex nut is ISO 8673.
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