... vehicle Material: 40Cr Grade: 10.9 or 12.9 Machine bolt for vehicle 1.Surface:black,phosphated,galvanized.. ... 2.Grade:4.8,8.8,10.9,12.9 3 ... phosphated,galvanized, Dacrotized2. Grade:4.8,8.8,10.9,12.93. Material:mild steel,45# steel,40Cr,42CrMo4. Packing ... quality control;(3) very reasonable and competitive price. Machine bolt for vehicle