GB/T 972-1994
Thread rolling flat dies (English Version)
- Standard No.
- GB/T 972-1994
- Language
- Chinese, Available in English version
- Release Date
- 1994
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2009-01
- Replace By
- GB/T 972-2008
- Latest
- GB/T 972-2008
- Scope
- This standard stipulates the type size, thread size and deviation, technical requirements and basic requirements for marking and packaging of thread rolling boards for ordinary threads. This standard is applicable to thread rolling boards for processing ordinary threads (GB/T 192~193, GB/T 196~197). The thread rolling board is divided into three precision grades: grade 1, grade 2 and grade 3. Class L 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 external threads with processing tolerance grades 6 and 7 .
GB/T 972-1994 history
- 2008 GB/T 972-2008 Thread rolling flat dies
- 1994 GB/T 972-1994 Thread rolling flat dies
