# ISO 21670:2003 — Withdrawn and superseded ISO standards For ISO 21670:2003, item title is Hexagon weld nuts with flange; status code is 9599; successor is ISO 21670:2014; withdrawn / published date is 2003-10-16, recorded from its source on 2026-08-05. - **Identifier:** ISO 21670:2003 _(verified: appears in the quote below)_ - **Item title:** Hexagon weld nuts with flange _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 21670:2014 - **Withdrawn / published date:** 2003-10-16 _(verified: appears in the quote below)_ ## What the source says > 35963,IS,,ISO 21670:2003,Hexagon weld nuts with flange,"Écrous hexagonaux à souder, à embase",2003-10-16,1,['21.060.20'],ISO/TC 2/SC 12,9599,,[63369],"['en','fr']",4,"
ISO 21670:2003 specifies characteristics for hexagon weld nuts with flange, with sizes M5 to M16 (coarse thread) and M12 to M16 (fine thread), of product grade A.
Weld nuts conforming to this International Standard are suitable for use with bolts of property classes up to 10.9 in accordance with ISO 898-1.
" ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).