Nylock Nut: Standards: DIN, IS, ISO, ANSI, BS, ASTM, ASME, JIS, EN etc.Range:M20 TO M120Grade:4, 5, 6, 8, 10, 12, 2H, 8S, 10S & Grade 7Threads:UNC, 8UN, UNF, Metric Course and Metric Fine.Finish:Black, Zinc Passivation, Powder Coating and Hot Dip Galvanized