Surface:Nature,Black,zinc plated,Hot dip galvanized Material:carbon steel,alloy steel Standard:DIN,ASME,GB Shear studs with ceramic ferrule are mainly used in construction projects.Surface:Nature,Black,zinc plated,Hot dip galvanizedMaterial:carbon steel,alloy steelStandard:DIN,ASME,GBGrade:4.8,5.8,6.8,8.8,10.9,12.9 Shear stud with ceramic ferrule