Covers cold coiled compression springs made from spring wires of up to 17 mm diameter. 1.1 This standard is applicable to springs having the following parameters:
a) Mean coil diameter; Dm up to 200 mm,
b) Unloaded length; L0 up to 630 mm,
c) Number of working coils; if > 2, and
d) Coil ratio; w from 4 up to 20.
IS 7906 Pt.2-1975 history
1976IS 7906 Pt.2-1975 Helical Compression Springs Part II Specification for Cold Coiled Springs of Circular Section Wire and Rod