Hex chamfered single face
Hex with hole
Hex with shoulder
Hex chamfered double faces
Hex unchamfered
CNS 3128-1998
Single chamfered hexagon nut,style 2
CNS 3132-1983
Hexagon nuts with small widths across flats
CNS 3132-1983
Hexagon thin nuts with small widths across flats
CNS 4379-1983
Thin hexagon nuts with small widths across flats