Hex chamfered single face
Hex with flange
Hex with shoulder
Cheese with collar
Hex chamfered double faces
EN 1664-1998
Prevailing torque type all-metal hexagon nuts with flange
EN 1664-2003
Prevailing torque type all-metal hexagon nuts with flange
EN 1664-2008
Prevailing torque type all-metal hexagon nuts with flange