# ISO 20401:2005 — Withdrawn and superseded ISO standards

For ISO 20401:2005, item title is Pneumatic fluid power systems — Directional control valves — Specification of pin assignment for electrical round connectors of diameters 8 mm and 12 mm; status code is 9599; successor is ISO 20401:2017; withdrawn / published date is 2005-01-12, recorded from its source on 2026-08-05.

- **Identifier:** ISO 20401:2005 _(verified: appears in the quote below)_
- **Item title:** Pneumatic fluid power systems — Directional control valves — Specification of pin assignment for electrical round connectors of diameters 8 mm and 12 mm _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 20401:2017
- **Withdrawn / published date:** 2005-01-12 _(verified: appears in the quote below)_

## What the source says

> 34172,IS,,ISO 20401:2005,Pneumatic fluid power systems — Directional control valves — Specification of pin assignment for electrical round connectors of diameters 8 mm and 12 mm,Transmissions pneumatiques — Distributeurs de commande directionnels — Spécification de l'affectation des broches des connecteurs électriques ronds de diamètres 8 mm et 12 mm,2005-01-12,1,['23.100.50'],ISO/TC 131/SC 5,9599,,[67812],"['en','fr']",4,<p>ISO 20401:2005 specifies the pin assignment for pneumatic directional control valves when used together with electrical connectors according to IEC 60947-5-2:2004.</p>

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).