Grade/Quality
6.8/8.8/10.9/12.9
Hardness
HRC 28-33/ HRC34-38/HRC39-42
Meterial
45#/40Cr(ASTM5140/DIN41Cr4)/35CrMo(ASTM4135,DIN35CrMo4)
Surface treatment
Phosphated/Galvanized/Dacromet
Color
Black/Grey/Silver/Yellow/Blue White
Put customer logo
Available
Attach nut
with/without nuts