This standard specifies the structural type, technical requirements, test methods and inspection rules of diaphragm springs. This standard applies to mechanical clutch diaphragm springs (hereinafter referred to as diaphragm springs), and the diaphragm springs in buffers should be used with reference.
GB/T 1800.2-2009 Geometrical Product Specifications (GPS) Limits and fits--Part 2:Tables of standard tolerance grades and limit deviations for holes and shafts