This International Standard specifies the characteristics of extra-large-series, product-grade-C plain washers in the 100 HV hardness class, of nominal sizes (nominal thread diameters) ranging from 5 mm to 36 mm inclusive.
2000DS/EN ISO 7094:2000 Plain washers - Extra large series - Product grade C
1986DS/ISO 7094:1986 Plain washers. Extra large series. Product grade C
DS/EN ISO 7094:2000 Plain washers - Extra large series - Product grade C has been changed from DS/ISO 7094:1986 Plain washers. Extra large series. Product grade C.