This International Standard specifies the requirements for metric self-locking nuts, with MJ thread, intended for use in aerospace construction at a maximum temperature greater than 425 °C.
This International Standard applies to self-locking nuts as defined above, provided that reference is made to this International Standard in the relevant definition document.
SIS SS-ISO 8641:1989 history
1989SIS SS-ISO 8641:1989 Aerospace — Self-locking nuts with maxi- mum operating temperature greater than 425° C — Procurement specification