... 4.8-12.9 grade Grade 12.9 wheel stud bolt with black plating Features:1.Size:As you requirement2.).Applicable For ... :DIN, ANSI,JIS,BS,GB,ISO,etc.4.)Finish:black,zinc plated,dacromet,etc5.)Material:45#,40CR,35CrMo,35#Remark ... :1.we can maufacture various bolt you need if you can supply the sample or ... ,we can meet your requirement. Grade 12.9 wheel stud bolt with black plating