This International Standard specifies test methods for metric self-locking nuts with MJ threads the maximum operating temperature of which is greater than 425 °C, intended for use in aerospace construction. It describes the test device and the method for each test.
Other test devices or test methods than those specified in this International Standard may be used, but, in the event of a dispute, the requirements laid down in this International Standard shall take precedence.
This International Standard shall be used in conjunction with the procurement specification laid down in ISO 8641.
It applies to self-locking nuts as defined above, provided that the relevant documents (drawing, procurement specification, etc.) refer to this International Standard.
SIS SS-ISO 8642:1988 history
1988SIS SS-ISO 8642:1988 Aerospace — Self-locking nuts with maxi- mum operating temperature greater than 425 °C — Test methods