Bolt and nut 1.Standard:DIN,UNC,UNF,BS 2.Material:carbon steel ... 3.Size:all size 4.Surface treatment:z/p,plain Bolt ... and nut 1.Standard:DIN,UNC,UNF,BS 2.Material:carbon ... that we have updated our prices of different types of Bolt,Nuts,Plain washer,Spring washer and other types of Chipboard ...