BS 8726-1:2002 PDF

Scope: This British Standard provides guidance on the design of parallel sided helical compression springs manufactured from rectangular and square section wire and bar. This standard applies only to springs made from rectangular section material where the ratio of radial dimension, 6, to the axial dimension, h, termed the shape factor, m, is not greater than 2.5 and not less than 0.4. NOTE 1 This applies because, outside the shape factor range 2.5 to 0.4, it is difficult to coil a spring accurately. NOTE 2 There are numerous methods of calculating the parameters necessary for the design of springs and initially the designer is free to use any one of these. Three types of end coils are provided for, i.e. open end, closed end and closed and ground end, the last of these being applicable only to springs where the axial dimension of material is 0.5 mm or greater. This British Standard differentiates between springs that have or have not been stress relieved after forming, designated group A springs, and springs, the material of which has undergone a structural change by heat treatment after forming, designated group B springs. This British Standard gives two methods of specifying springs for general purposes and one method of testing springs.

BS 8726-1:2002 history

2010 BS 1726-1:2010 Cylindrical helical springs made from round wire and bar. Guide to methods of specifying and tolerancing hot coiled springs, and cold coiled springs not covered by BS EN 15800, and general spring testing. Compression springs
2002 BS 1726-1:2002 Cylindrical helical springs made from round wire and bar - Guide to methods of specifying, tolerances and testing - Compression springs
1987 BS 1726-1:1987 Coil springs - Guide for the design of helical compression springs
0000 BS 1726 Pt.1:1964