Taiwan Provincial Standard of the People's Republic of China
Latest
CNS 4553-1978
Scope
This standard applies to radiused trapezoidal threads and stipulates their limiting dimensions and deviations, as well as the tolerances and allowable wear of thread gauges.
CNS 4553-1978 history
1978CNS 4553-1978 Rounded Trapezoidal Thread Limits of Sizes and Deviations Tolerances and Permissible Weal of Thread Gauges