Thread Bar Bolts, Made of A193 B7/A194 2H Material: Steel stainless steel Surface: Plain,Black oxide or other requirement. Standard: ANSI/ASMEMaterials: A193 B7/A194 2H, A193 B7M/A194 2HM, A193 B8/A194 8, A193 B8M/A194 8M, A193 B16/A194 4/7, A320 L7/A194 4/7, A320 L7M/A194 7MSurface: black, galvanized, nickel, cadmium, Teflon-plated Standard Thread bar bolt