1)Commodity:bolts,nuts,washers 2)Grade:4.8,6.8, ... steel bolts and nuts Size MMM10M12M14M16M20M22M24M27M30M33M36M39M42M45M48M52M56M60M64P(Screw-pitch)1.51.75222.52.5333.53.5444.54.5555. ... 480220-500240-500260-500bL≤1252630343846505460667278849096102----1252004549535765697379859197103109115121129137145153 1) Material: Q235,45#,35K,40Cr,35CrMo,A32) Usage ...