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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
Hexagon head bolt and single coil spring lock washer assemblies
Standard published on 16.4.1988
Selected format:Hexagon head bolt and serrated lock washer external teeth assemblies
Standard published on 16.4.1988
Selected format:Hexagon head boltsingle coil spring lock washer and plain washer assemblies
Standard published on 16.4.1988
Selected format:Tapping screw and washer assemblies with plain washers
Standard published on 12.7.2017
Selected format:Cross recessed pan head screw andserrated lock washer external teeth assemblies
Standard published on 16.4.1988
Selected format:Cross recessed hexagon head tapping screw with indentation and washer assemblies with plain washers
Standard published on 10.2.2004
Selected format:Single coil spring lock washer for assembly
Standard published on 16.4.1988
Selected format:Serrated lock washer external teeth for assembly
Standard published on 16.4.1988
Selected format:Countersunk external toothed lock washer for assembly
Standard published on 16.4.1988
Selected format:Cross recessed pan head screw and single coil spring lock washer assemblies
Standard published on 16.4.1988
Selected format:Latest update: 2026-04-22 (Number of items: 2 274 512)
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