GB/T 20668-2006Unified screw threads -- Basic dimensions (English PDF)
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Level / Type
National · Recommended
Issue date
December 8, 2006
Implementation date
July 1, 2007
Scope
GB/T 20668-2006 (Unified screw threads -- Basic dimensions) is available as an English-translated PDF.
GB/T 20668-2006 — This standard specifies the basic dimensions of unified thread. This standard applies to general purpose mechanical fastening screw connection.
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Document preview — GB/T 20668-2006
National Standard of the People's Republic of China
- ICS
- 21.040.20
- Classification
- J 04
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Contents
- What this standard covers1
- Document data2
- Standards quoted by this document3
What this standard covers
This standard specifies the basic dimensions of unified thread. This standard applies to general purpose mechanical fastening screw connection.
Document data
International classification (ICS): 21.040.20.
Chinese classification (CCS): J04.
Estimated length of the Chinese original: 28,210 words.
Adopted international standard: ASTM B1.1-2003, NEQ.
Standards quoted by this document
GB/T 14791; GB/T 20669-2006; GB/T 20670-2006
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 3464-2025Machine and hand taps
- GB/T 17258-2022Steel cylinders for the on-board storage of compressed natural gas as a fuel for automotive vehicles
- JB/T 13335-2017Thread forming taps for small diameter unified threads
- JB/T 13336-2017Spiral flute taps for small diameter unified threads
- JB/T 11440-2013Taps with internal chip removal for unified threads
- JB/T 8824.1-2012Tool for unified threads - Part 1: Taps
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GB/T 20668-2006
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