This standard specifies the dimensions and specifications of 60° tapered head and reduced rod circular punches. This standard is applicable to 60° conical head shrink rod circular punch with a diameter of 2mm-3mm. This standard also gives material guidelines and hardness requirements, and specifies the marking of 60° cone head reduction round punches.
JB/T 5828-2008 Referenced Document
JB/T 7653 Die parts technical conditions*, 2020-12-09 Update
JB/T 5828-2008 history
2008JB/T 5828-2008 Stamping dies.Round punches with 60°conical head and reduced shank
1991JB/T 5828-1991 Die 60° conical head shrink rod circular punch