Tools for pressing -- Compression springs with rectangular section -- Housing dimensions and colour coding
This standard has been revised by ISO 10243:2019
ISO 10243:2010 establishes the technical specifications for compression springs made from rectangular wires.
It is applicable to springs which are set. It does not attempt to specify the quality of the springs themselves, nor all of their dimensions (e.g. cross-section), their material or their length of life.
The springs are classified into spring rates: light, medium, strong and extra strong, and a colour code is given for each spring rate.