Anchor Bolt/bolt anchor/j-bolt with square nuts, M6-16xL, Zinc Plated,HDG Anchor Bolt/bolt anchor/j-bolt1.Materail:Steel,Alloy Steel2.Intensity Level:4.8 Grade,6.8 Grade,8.8 Grade,10.9 Grade3.Surface:Zinc plated,Yellow zinc plated,Hot galvanized zinc4.According to buyers' technical drawings or samples. Anchor Bolt