JB/T 4212.7-1996
Mold for cold heading interior hexagonal cylindrical head screws Interior hexagonal punch pin C type (English Version)
- Standard No.
- JB/T 4212.7-1996
- Language
- Chinese, Available in English version
- Release Date
- 1996
- Published By
- Professional Standard - Machinery
- Status
- 2014-11
- Replace By
- JB/T 4212.4-2014
- Latest
- JB/T 4212.4-2014
- Scope
- This standard specifies the structural type and size, technical requirements and markings of cold heading GB 70 hexagon socket cylindrical head screws M4~M12 C type inner door angle punch. This standard applies to molds for multi-station automatic cold heading machines.
JB/T 4212.7-1996 history
- 2014 JB/T 4212.4-2014 Cold heading dies for hexagon socket head cap screws.Part 4: Punches for forming hexagon sockets
- 1996 JB/T 4212.7-1996 Mold for cold heading interior hexagonal cylindrical head screws Interior hexagonal punch pin C type
JB/T 4212.7-1996 Mold for cold heading interior hexagonal cylindrical head screws Interior hexagonal punch pin C type was changed to JB/T 4212.4-2014 Cold heading dies for hexagon socket head cap screws.Part 4: Punches for forming hexagon sockets.
