This International Standard specifies the size pairing of double-ended wrenches. It applies not only to flat wrenches for nuts but also to all wrenches with two fixed ends for screws and nuts, such as socket wrenches.
This International Standard specifies preferred pairings of widths across flats in accordance with ISO 272 (see Table 1).
It also gives in Table 2 other pairings still widely used but non-preferred.
2018DIN ISO 1085:2018-12 Assembly tools for screws and nuts - Double-ended wrenches - Size pairing (ISO 1085:2016)
1970DIN ISO 1085 E:2018-06 Assembly tools for screws and nuts - Double-ended wrenches - Size pairing
2018DIN ISO 1085:2018 Assembly tools for screws and nuts - Double-ended wrenches - Size pairing (ISO 1085:2016)
2007DIN ISO 1085:2007 Assembly tools for screws and nuts - Double-ended wrenches - Size pairing (ISO 1085:1999) English version of DIN ISO 1085:2007-04
DIN ISO 1085:2007 Assembly tools for screws and nuts - Double-ended wrenches - Size pairing (ISO 1085:1999) English version of DIN ISO 1085:2007-04 has been changed from DIN 475-3:1987 .