# ISO 4156:1981 — Withdrawn and superseded ISO standards

For ISO 4156:1981, item title is Straight cylindrical involute splines — Metric module, side fit — Generalities, dimensions and inspection; status code is 9599; successor is ISO 4156-1:2005 | ISO 4156-2:2005 | ISO 4156-3:2005; withdrawn / published date is 1981-05-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4156:1981 _(verified: appears in the quote below)_
- **Item title:** Straight cylindrical involute splines — Metric module, side fit — Generalities, dimensions and inspection _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4156-1:2005 | ISO 4156-2:2005 | ISO 4156-3:2005
- **Withdrawn / published date:** 1981-05-01 _(verified: appears in the quote below)_

## What the source says

> 9921,IS,,ISO 4156:1981,"Straight cylindrical involute splines — Metric module, side fit — Generalities, dimensions and inspection","Cannelures cylindriques droites à flancs en développante — Module métrique, à centrage sur flancs — Généralités, dimensions et vérification",1981-05-01,1,['21.120.30'],ISO/TC 14,9599,,"[36497,36498,36499]","['en','fr']",138,"<p>Provides data and guidance for the design, manufacture and inspection of the involute splines. Limiting dimensions, tolerances and manufacturing errors are defined and tabulated. Linear and angular dimensions are expressed in mm and degrees, respectively.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).