ISO 8674:2012 specifies the characteristics of hexagon high nuts (style 2) with metric fine pitch thread, with nominal thread diameters from 8 mm up to and including 36 mm, with product grade A for sizes D =< 16 mm and product grade B for sizes D > 16 mm.
Coarse thread hexagon nuts, style 2, according to ISO 4033 are intended to be the first choice.
If, in special cases, specifications other than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 724, ISO 898-2, ISO 965-1 and ISO 4759-1.
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