# ISO 6164:1994 — Withdrawn and superseded ISO standards

For ISO 6164:1994, item title is Hydraulic fluid power — Four-screw, one-piece square-flange connections for use at pressures of 25 MPa and 40 MPa (250 bar and 400 bar); status code is 9599; successor is ISO 6164:2018 | ISO/CD 6164-1 | ISO/CD 6164-2 | ISO/CD 6164-3; withdrawn / published date is 1994-04-14, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6164:1994 _(verified: appears in the quote below)_
- **Item title:** Hydraulic fluid power — Four-screw, one-piece square-flange connections for use at pressures of 25 MPa and 40 MPa (250 bar and 400 bar) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6164:2018 | ISO/CD 6164-1 | ISO/CD 6164-2 | ISO/CD 6164-3
- **Withdrawn / published date:** 1994-04-14 _(verified: appears in the quote below)_

## What the source says

> 12412,IS,,ISO 6164:1994,"Hydraulic fluid power — Four-screw, one-piece square-flange connections for use at pressures of 25 MPa and 40 MPa (250 bar and 400 bar)",Transmissions hydrauliques — Brides de raccordement carrées monobloc à quatre vis pour des pressions d'utilisation de 25 MPa et 40 MPa (250 bar et 400 bar),1994-04-14,1,['23.100.40'],ISO/TC 131/SC 4,9599,,"[59930,36796,36797,36798]","['en','fr']",11,"<p>Gives complete general and dimensional specifications. For flange connections, a design factor of 2,5 is valid, not including weld joints, for which special instructions exist. Also specifies the dimensions of the seals to be used, as well as the grooves to house the seals.</p>" 1241

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).