ISO 4161-1999
Hexagon nuts with flange
ISO 10663-1999
Hexagon flange nuts with fine pitch thread
ISO 4161-2012
Hexagon nuts with flange
ISO 4161-2017
Hexagon nuts with flange
ISO 10663-2012
Hexagon flange nuts with fine pitch thread
ISO 10663-2017
Hexagon flange nuts with fine pitch thread