GB/T 5789-1986
ActiveHexagon flange bolts--Heavy series--Product grade B
六角法兰面螺栓 加大系列 B级
Application Summary AI generated
This standard specifies the dimensions, tolerances, and technical requirements for heavy series hexagon flange bolts with product grade B. It is applied in mechanical assemblies requiring high-strength fastening with a larger bearing surface, such as automotive engines, heavy machinery, and structural steel connections, where the flange distributes clamping load to prevent loosening under vibration.
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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.