This standard specifies the size and parameters of small cylindrical helical compression springs (both ends of the coils are tightened without grinding and parallel and ground). This standard applies to general-purpose cold-rolled cylindrical helical compression springs made of circular cross-section materials with a diameter of less than 0.5mm (both ends of the coils are tightly ground and non-grinded and grounded and ground), hereinafter referred to as springs.
GB/T 1973.3-1989 history
2005GB/T 1973.3-2005 Small cylindrically coiled compression spring dimensions and parameters
1989GB/T 1973.3-1989 Small cylindrically coiled compression spring--Dimensions and parameters