The property classes, mechanical and performance properties and the methods of test listed in this standard apply to prevailing torque type nuts
– with nominal thread diameters from 3 to 39 mm;
– with ISO metric thread as specified In the DIN 13 standard series;
– with styles as specified in the appropriate product standards in which reference is made to this standard;
– made from alloy or non-alloy steel;
– for applications at temperatures from
~ 50 to + 120°C for nuts with a non-metallic insert,
~ 50 to + 300°C for all-metal non-plated nuts,
~ 60 to + 230°C for all-metal plated nuts.
This standard doer not apply to nuts that have to meet particular requirements regarding e.g.
– weldability;
– corrosion resistance;
– lower and higher application temperatures which require special materials or coatings.