# ISO/TR 4122:1977 — Withdrawn and superseded ISO standards

For ISO/TR 4122:1977, item title is Equipment for working the soil — Dimensions of flat disks — Type A; status code is 9599; successor is ISO/DIS 4122; withdrawn / published date is 1977-06-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO/TR 4122:1977 _(verified: appears in the quote below)_
- **Item title:** Equipment for working the soil — Dimensions of flat disks — Type A _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/DIS 4122
- **Withdrawn / published date:** 1977-06-01 _(verified: appears in the quote below)_

## What the source says

> 9872,TR,,ISO/TR 4122:1977,Equipment for working the soil — Dimensions of flat disks — Type A,Matériel de travail du sol — Dimensions des disques plats — Type A,1977-06-01,1,['65.060.20'],ISO/TC 23,9599,,[9873],"['en','fr']",3,"<p>Specifies interchangeability dimensions for agricultural disks of the same type and nominal size, classified as types A, B, and C. Applies to disks as working parts of ploughs, harrows, and disk-tillers. The nominal dimensions recommended for disks in the table those given A flat disks. The figure illustrates profile and section.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).