- Mechanical and physical : Grade 5 8 10 - Finish : Coating Zinc , Black Oxide , Phosphate ,Dacromet - Mechanical and physical : Grade 5 8 10 8.8 10.9 12.9- Material : 45# , 40Cr ,35CrMo ( SAE 1045 , SAE 5140 ,SAE 4135 )- Finish : Coating Zinc ( white , yello , black , green ) , Phosphate , Dacromet wheel bolt and nut