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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Fasteners--Surface discontinuities--Boltsscrews and studs for general requirements
Standard published on 26.9.2000
Selected format:Fasteners--Surface discontinuities--Nuts
Standard published on 26.9.2000
Selected format:Fasteners--Surface discontinuities--Boltsscrews and studs for special requirements
Standard published on 26.9.2000
Selected format:Fasteners—Hexagon head bolts—Product grade C
Standard published on 31.10.2025
Selected format:Fasteners—Hexagon head bolts—Full thread—Product grade C
Standard published on 31.10.2025
Selected format:Fasteners—Hexagon head bolts
Standard published on 31.10.2025
Selected format:Fasteners—Hexagon head bolts—Full thread
Standard published on 31.10.2025
Selected format:Fasteners—Hexagon head bolts—Reduced shank—Product grade B
Standard published on 31.10.2025
Selected format:Fasteners—Hexagon head bolts—Fine pitch thread
Standard published on 31.10.2025
Selected format:Hexagon head bolts—Fine pitch thread—Full thread
Standard published on 24.2.2016
Selected format:Latest update: 2026-08-12 (Number of items: 2 292 463)
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