EN 1661-1998
Hexagon nuts with flange
EN 14218-2003
Hexagon head nuts with flange with fine pitch thread
EN 14218-2003
Hexagon flange nuts with fine pitch thread
EN 1661-2003
Hexagon nuts with flange
EN 1661-2008
Hexagon nuts with flange
EN 14218-2008
Hexagon head nuts with flange with fine pitch thread
EN 14218-2008
Hexagon flange nuts with fine pitch thread