Hex chamfered single face
Hex with hole
Hex with shoulder
Hex chamfered double faces
Hex unchamfered
UNI 5587-1968
Hexagon nuts,Style 2
UNI 5588-1968
Hexagon nuts,Style 1
UNI 5713
High-strength large hexagon nuts for structural bolting-ISO metric coarse thread
UNI 5589
Hexagon thin nuts