General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 2821-2003
Replace
GB/T 2821-1992
Scope
This standard gives geometric codes for marking gear parameters. It consists of two tables: - the main code, which consists of a single basic letter (see Table 1); - the subscript, which is used to limit the main code (see Table 2, Table 3 and Table 4).