This International Standard specifies test methods for metric plain or slotted (castellated) nuts, with MJ threads in accordance with ISO 5855-2, for use in aerospace construction. It describes the test device and the method for each test.

It is applicable to nuts as defined above, provided that the relevant documents (product standard, definition document, procurement specification, etc.) refer to this International Standard.

This International Standard is to be used in conjunction with ISO 9139 or any other similar document.