This International Standard specifies the characteristics of hexagon nuts, style 1, with metric fine pitch thready with nominal thread diameters d from 8 mm up to and including 64 mm, with product grade A for sizes d up to and including 16 mm and product grade B for sizes d over 16 mm.
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 724, ISO 898-6, ISO 965-1, ISO 3506-2 and ISO 4759-1.
Coarse thread hexagon nuts, style 1, according to ISO 4032 should be the first choice.
NOTE For hexagon nuts, style 2, with fine pitch thread, see ISO 8674.
ISO 8673:1999 history
2023ISO 8673:2023 Fasteners — Hexagon regular nuts (style 1), with fine pitch thread
2012ISO 8673:2012 Hexagon regular nuts (style 1) with metric fine pitch thread - Product grades A and B
1999ISO 8673:1999 Hexagon nuts, style 1, with metric fine pitch thread - Product grades A and B
1988ISO 8673:1988 Hexagon nuts, style 1, with metric fine pitch thread; product grades A and B