Chewin in the Chung

Great things about the internet: You can buy ISO standards online, easily downloaded in .pdf files. Except if you do not know the exact ISO terminology for what you need, you might accidentally buy:

Aerospace ¡X Nuts, spline-drive, selflocking,
with MJ threads, classifications:
1 100 MPa (at ambient temperature)/425 ¢XC,
1 100 MPa (at ambient temperature)/650 ¢XC,
1 210 MPa (at ambient temperature)/425 ¢XC,
1 210 MPa (at ambient temperature)/730 ¢XC,
1 550 MPa (at ambient temperature)/235 ¢XC,
1 550 MPa (at ambient temperature)/425 ¢XC
and 1 550 MPa (at ambient temperature)/
600 ¢XC ¡X Dimensions

So if anybody needs ISO specs for self-locking spline nuts for the aerospace industry, I've got you covered.