DIN 431-B hexagon nut (form B), G 1", Article number 431U1002BSP. Property class / material: steel 14h, surface finish hot-dip galvanised. Hexagon Nut manufactured to DIN 431 with ISO 228-1 parallel pipe thread (G) thread, coarse pitch, fully threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.