This International Standard gives specifications for hexagon thin nuts with metric dimensions and thread diameters from 1,6 up to and including 36 mm, with product grade A for sizes < M16 and product grade B for sizes > M16.
If, in special cases, specifications other than those listed in this International Standard are required, they should be selected from existing International Standards, for example ISO 261, ISO 898, ISO 965, ISO 3506, ISO 4759/1.