GB/T 18230.3-2000
AbolishedHexagon nuts for high-strength structural bolting with large width across flats--Product grade B--Property classes8 and 10
栓接结构用大六角螺母 B级 8和10级
Application Summary AI generated
This standard specifies the dimensions, technical requirements, and marking for large-width-across-flats hexagon nuts of property classes 8 and 10, used in high-strength structural bolting assemblies. It is applied in steel structure connections for construction, bridges, and heavy machinery where reliable preloaded bolted joints are required. The standard ensures compatibility with corresponding high-strength bolts and washers in friction-type or bearing-type connections.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.