scope:

This Standard specifies general principles for the creation of symbols indicating physical quantities, coefficients and parameters for metal springs (hereafter, referred to as "symbol for spring").

It also specifies the presentation of basic characters, subscripts and application symbols for spring with attention to the technical documentation exchanged between the parties concerned with delivery. The scope of metallic springs in this Standard is the helical compression springs, helical extension springs, helical torsion springs, flat springs and leaf springs.

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows. ISO 16249: 2013 Springs-Symbols (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ lEe Guide 21-1.