# ISO 8641:1987 — Withdrawn and superseded ISO standards For ISO 8641:1987, item title is Aerospace — Self-locking nuts with maximum operating temperature greater than 425 degrees C — Procurement specification; status code is 9599; successor is ISO 8641:2008 | ISO/WD 8641; withdrawn / published date is 1987-07-02, recorded from its source on 2026-08-05. - **Identifier:** ISO 8641:1987 _(verified: appears in the quote below)_ - **Item title:** Aerospace — Self-locking nuts with maximum operating temperature greater than 425 degrees C — Procurement specification _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 8641:2008 | ISO/WD 8641 - **Withdrawn / published date:** 1987-07-02 _(verified: appears in the quote below)_ ## What the source says > 16004,IS,,ISO 8641:1987,Aerospace — Self-locking nuts with maximum operating temperature greater than 425 degrees C — Procurement specification,Aéronautique et espace — Écrous à freinage interne dont la température maximale d'utilisation est supérieure à 425 degrés C — Spécification d'approvisionnement,1987-07-02,1,['49.030.30'],ISO/TC 20/SC 4,9599,,"[38543,21422]","['en','fr']",16,"

Defines the requirements for metric nuts, with MJ thread. Applies to these nuts, provided that reference is made to this International Standard in the relevant definition document. Includes definitions, describes certification and quality assurance, technical requirements and test methods, qualification and ac ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).