Standard BS 916
Thread BSW-thread
Ex-drive Square
Shank Normal shank
Material Steel, S/S
Performance Grade Class 9.8, Class12.9, Gr 1-J429, Gr 2-J429, Gr B7M-A193/193M, Gr B8-A193/193M, Gr B8A-A193/193M, Gr B8CLN-A193/193M, Gr B8LNA-A193/193M
Marks B7M, B8, B8A, B8LNA, B8CLN
Surface Treatment Blue-white zinc, White zinc, Yellow zinc, Phosphated, Black, Nickel, Hot dip galvanized, Black zinc