# ISO 3442:1991 — Withdrawn and superseded ISO standards For ISO 3442:1991, item title is Self-centring chucks for machine tools with two-piece jaws (tongue and groove type) — Sizes for interchangeability and acceptance test specifications; status code is 9599; successor is ISO/CD 3442-3 | ISO 3442-2:2005 | ISO 3442-1:2005 | ISO 3442-3:2007; withdrawn / published date is 1991-10-17, recorded from its source on 2026-08-05. - **Identifier:** ISO 3442:1991 _(verified: appears in the quote below)_ - **Item title:** Self-centring chucks for machine tools with two-piece jaws (tongue and groove type) — Sizes for interchangeability and acceptance test specifications _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 3442-3 | ISO 3442-2:2005 | ISO 3442-1:2005 | ISO 3442-3:2007 - **Withdrawn / published date:** 1991-10-17 _(verified: appears in the quote below)_ ## What the source says > 8762,IS,,ISO 3442:1991,Self-centring chucks for machine tools with two-piece jaws (tongue and groove type) — Sizes for interchangeability and acceptance test specifications,"Mandrins pour machines-outils, à serrage concentrique et à mors rapportés (assemblage cruciforme par tenon et languette) — Dimensions d'interchangeabilité et conditions de réception",1991-10-17,2,['25.060.20'],ISO/TC 39/SC 8,9599,[8761],"[32137,39614,39613,40246]","['en','fr']",11,"
Defines precision classes as follows: class I, corresponding to precision chucks; class II, corresponding to normal accuracy chucks. This second edition cancels and replaces the first edition (1975).
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).