Dado esagonale in acciaio, finitura zincata a caldo, grado 2, ASME B18.2.2, 1/2"-13 T...
It has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the nut. Others, such as eye nuts, thumb nuts, and wing nuts, can be tightened by hand. Exterior Finish: Hot-Dipped Galvanized.