This standard specifies the dimensional specifications and tolerances of ball locking circular punches. This standard applies to ball locking circular punches with a diameter of 6mm-22mm. This standard also gives material guidelines and hardness requirements and specifies the marking of ball locking circular punches.
JB/T 5829-2008 Referenced Document
JB/T 7653 Die parts technical conditions*, 2020-12-09 Update