This standard specifies required characteristics for dimensions, materials and surface treatment of washers, which are primarily designed for use under bolt head.
DIN 65209:2010 Referenced Document
DIN 29895 Aerospace - Alternative materials for fasteners; Inactive for new design*, 2014-12-01 Update
DIN ISO 13715 Technical product documentation - Edges of undefined shape - Indication and dimensioning (ISO 13715:2017)*, 2018-09-01 Update
DIN ISO 2768-1 General tolerances; tolerances for linear and angular dimensions without individual tolerance indications; identical with ISO 2768-1:1989
DIN 65209:2010 history
2010DIN 65209:2010-04 Aerospace series - Washers, countersunk; Text in German and English
2010DIN 65209:2010 Aerospace series - Washers, countersunk; Text in German and English
2001DIN 65209:2001 Aerospace series - Washers, countersunk