# ISO 3161:1977 — Withdrawn and superseded ISO standards

For ISO 3161:1977, item title is UNJ threads, with controlled root radius, for aerospace — Inch series; status code is 9599; successor is ISO 3161:1996; withdrawn / published date is 1977-02-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 3161:1977 _(verified: appears in the quote below)_
- **Item title:** UNJ threads, with controlled root radius, for aerospace — Inch series _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 3161:1996
- **Withdrawn / published date:** 1977-02-01 _(verified: appears in the quote below)_

## What the source says

> 8339,IS,,ISO 3161:1977,"UNJ threads, with controlled root radius, for aerospace — Inch series","Filetages UNJ, avec rayon à fond de filet contrôlé, pour applications aérospatiales — Série en inches",1977-02-01,1,['49.030.10'],ISO/TC 20/SC 4,9599,,[8340],"['en','fr']",43,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).