DIN 7969-1989
Slotted countersunk head screws for structural steel bolting for supply with or without nuts
DIN 7969-1999
Slotted countersunk head screws for structural steel bolting for supply with or without nuts
DIN 7969-2007
Slotted countersunk head screws for structural steel bolting for supply with or without nuts
DIN 7969-2017
Slotted countersunk head screws for structural steel bolting for supply with or without nuts