DIN EN 20273 Fasteners; clearance holes for bolts and screws (ISO 273:1979); german version EN 20273:1991
DIN ISO 2768-1 General tolerances; tolerances for linear and angular dimensions without individual tolerance indications; identical with ISO 2768-1:1989
DIN ISO 2768-2 General tolerances; geometrical tolerances for features without individual tolerances indications; identical with ISO 2768-2:1989
DIN 974-1:2008 history
2008DIN 974-1:2008-02 Diameters of counterbores - Manufacturing dimensions - Part 1: Hexagon socket head cap screws and screws with cheese head or pan head
2008DIN 974-1:2008 Diameters of counterbores - Manufacturing dimensions - Part 1: Hexagon socket head cap screws and screws with cheese head or pan head
1991DIN 974-1:1991 Diameters of counterbores for hexagon socket head cap screws and screws with cheese head or pan head; manufacturing dimensions