# ISO 3873:1977 — Withdrawn and superseded ISO standards For ISO 3873:1977, item title is Industrial safety helmets; status code is 9599; successor is ISO 3873:2025; withdrawn / published date is 1977-03-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 3873:1977 _(verified: appears in the quote below)_ - **Item title:** Industrial safety helmets _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 3873:2025 - **Withdrawn / published date:** 1977-03-01 _(verified: appears in the quote below)_ ## What the source says > 9468,IS,,ISO 3873:1977,Industrial safety helmets,Casques de protection pour l'industrie,1977-03-01,1,['13.340.20'],ISO/TC 94,9599,,[82428],"['en','fr']",8,"
Specifies physical and performance requirements, methods of test and marking requirements. The mandatory requirements apply to helmets for general use in industry. Additional optional performance requirements are included: Shock absorption, penetration, flammability, electrical insulation, and lateral rigidity.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).