1)nut and bolt 2>Grade: Q235,202,304,316L 3 ... 8/10.9 Features: 1) Standard: DIN, GB, JIS, ANSI, Non-standard 2) Material: Carbon steel, stainless steel ,aolly ... ,DIN933, DIN601, DIN558, GA/T5780-GB/T5783, JISB1180, ANSI/ASME B18.2.1,B.S.W916) ,high strength bolts ... square head bolts, expansion bolt(ANSI,BS,DIN), eye bolt (DIN444) and so on. NUT:(M12-45), include spring nut, hex nut(DIN934), cap nut( ...