1.Finish: plain, zinc, blank and HDG 2.Thread: MM, UNC, UNF and BSW 3.Grades: 4.8, 5.8, ... 8, 9.8, 10.9 and 12.9 carriage bolts DIN6031) Various kinds of bolts available2)Material:carbon steel, stailess steel3)Diameter: 5 to ... 16 to 8-inch)4)Thread: MM, UNC, UNF and BSW5) Can be made with different tensile strength, such ... 8, 8.8, 10.9 and 12.9, inperial grade 2, 5, 8 and 106) Can be supplied with ...