NBN EN 13906-2:2002

This standard specifies the calculation and design of cold and hot coiled helical cylindrical helical extension springs made from round wire and bar with values according to table 1, loaded in the direction of the spring axis and operating at normal ambient temperatures. NOTE 1 In cases of substantially higher or lower working temperature, it is advisable to seek the manufacturer's advice. NOTE 2 Quality Standards for cold coiled extension springs will be developed later.