... , non-standard 2) Property grade: 8.8S, 10.9s 3) Surface: zinc plated, black oxide, Features: 1) Standard ... black 4) Material: carbon steel5) Widely used for steel structuresProduct information Description(TC bolt) Torshear type high strength bolts for steel ... 1040Mpa.Yield strengthMin:940MpaGrade8.8 or 10.9StandardDIN, ANSI, ASME, ASTM, IFI, JIS, ASThreadMetric, UNC, UNF, BSWFinishPlain, Galvanized, ...