Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm[8] With exception to part 7, which defines test standards, the parts of this standard define properties for fasteners made of carbon steel and alloy steel.
The standards do not cover fasteners that would otherwise apply but require special properties, such as weldability or corrosion resistance.
[2] Part 2 defines the mechanical properties for coarse threaded nuts up to an M39 size and a height of at least half the nominal diameter.
[3] Part 3 defines the mechanical and physical properties of flat washers, designed to be used in bolted joints in combination with other fasteners.
Note that the working temperature range for these fasteners is −50 to 300 °C (−58 to 572 °F)[7] Part 7 defines how to perform torsional tests on bolts and screws that have a nominal diameter less than or equal to 10 mm.