# ISO 6624-3:2001 — Withdrawn and superseded ISO standards For ISO 6624-3:2001, item title is Internal combustion engines — Piston rings — Part 3: Keystone rings made of steel; status code is 9599; successor is ISO 6624-3:2017; withdrawn / published date is 2001-08-23, recorded from its source on 2026-08-05. - **Identifier:** ISO 6624-3:2001 _(verified: appears in the quote below)_ - **Item title:** Internal combustion engines — Piston rings — Part 3: Keystone rings made of steel _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6624-3:2017 - **Withdrawn / published date:** 2001-08-23 _(verified: appears in the quote below)_ ## What the source says > 27929,IS,,ISO 6624-3:2001,Internal combustion engines — Piston rings — Part 3: Keystone rings made of steel,Moteurs à combustion interne — Segments de piston — Partie 3: Segments trapézoïdaux en acier,2001-08-23,1,['43.060.10'],ISO/TC 22/SC 34,9599,,[67905],['en'],24, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).