ISO 13918-1998
Welding-Studs and ceramic ferrules for arc stud welding-Types IT-Stud with internal thread
ISO 21670-2004
Weld hexagon nuts with flange
ISO 13918-2008
Welding-Studs and ceramic ferrules for arc stud welding-Types IT-Stud with internal thread
ISO 13918-2017
Welding-Studs and ceramic ferrules for arc stud welding-Types IT-Stud with internal thread
ISO 21670-2008
Weld hexagon nuts with flange
ISO 21670-2014
Weld hexagon nuts with flange