JB/T 4212.4-2014
Cold heading dies for hexagon socket head cap screws.Part 4: Punches for forming hexagon sockets (English Version)
- Standard No.
- JB/T 4212.4-2014
- Language
- Chinese, Available in English version
- Release Date
- 2014
- Published By
- Professional Standard - Machinery
- Latest
- JB/T 4212.4-2014
- Replace
- JB/T 4212.5-1996 JB/T 4212.6-1996 JB/T 4212.7-1996 JB/T 4212.8-1996
- Scope
- This part of JB/T 4212 specifies the structural type and size, material and hardness, requirements and markings of the hexagon socket punch of the cold heading die for hexagon socket cylindrical head screws. This section applies to hexagonal cylindrical head screw cold heading dies for double-click whole-mold automatic cold heading machines and multi-station automatic cold heading machines.
JB/T 4212.4-2014 Referenced Document
- GB/T 70.1-2008 Hexagon socket head cap screws
- JB/T 4213 Cold heading dies for fasteners.Specifications
JB/T 4212.4-2014 history
- 2014 JB/T 4212.3-2014 Cold heading dies for hexagon socket head cap screws.Part 3: Forming punches
- 1996 JB/T 4212.4-1996 Mold for cold heading interior hexagonal cylindrical head screws Forming punch pin
JB/T 4212.4-2014 Cold heading dies for hexagon socket head cap screws.Part 4: Punches for forming hexagon sockets has been changed from JB/T 4212.5-1996 Mold for cold heading interior hexagonal cylindrical head screws Interior hexagonal punch pin A type.
JB/T 4212.4-2014 Cold heading dies for hexagon socket head cap screws.Part 4: Punches for forming hexagon sockets has been changed from JB/T 4212.6-1996 Mold for cold heading interior hexagonal cylindrical head screws Interior hexagonal punch pin B type.
JB/T 4212.4-2014 Cold heading dies for hexagon socket head cap screws.Part 4: Punches for forming hexagon sockets has been changed from JB/T 4212.7-1996 Mold for cold heading interior hexagonal cylindrical head screws Interior hexagonal punch pin C type.
JB/T 4212.4-2014 Cold heading dies for hexagon socket head cap screws.Part 4: Punches for forming hexagon sockets has been changed from JB/T 4212.8-1996 Mold for cold heading interior hexagonal cylindrical head screws Interior hexagonal punch pin D type.
