GB/T 972-2008
Thread rolling flat dies (English Version)
- Standard No.
- GB/T 972-2008
- Language
- Chinese, Available in English version
- Release Date
- 2008
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 972-2008
- Replace
- GB/T 972-1994
- Scope
- This standard stipulates the basic requirements for the type and size, tooth size and deviation, technical requirements, marking and packaging of thread rolling boards for ordinary threads. This standard applies to thread rolling boards for processing common threads (GB/T 192-193, GB/T 196-197). Thread rolling boards are divided into three precision grades: Grade 1, Grade 2 and Grade 3. Grade 1 is suitable for processing external threads with tolerance grades 4 and 5; grade 2 is suitable for processing external threads with tolerance grades 5 and 6; grade 3 is suitable for processing external threads with tolerance grades 6 and 7 .
GB/T 972-2008 Referenced Document
- GB/T 192 General purpose metric screw threads--Basic profile
- GB/T 193 General purpose metric screw threads--General plan
- GB/T 196 General purpose metric screw threads--Basic dimensions
- GB/T 197 General purpose metric screw threads—Tolerances*， 2018-03-15 Update
GB/T 972-2008 history
- 2008 GB/T 972-2008 Thread rolling flat dies
- 1994 GB/T 972-1994 Thread rolling flat dies
