GB/T 32.2-1988
AbolishedHexagon bolts with wire holes on head--Reduced shank--Product grade B
六角头头部带孔螺栓 细杆 B级
Application Summary AI generated
This standard specifies the dimensions, technical requirements, and marking of hexagon bolts with wire holes on the head and a reduced shank, classified as product grade B. It is applied in mechanical assemblies where bolts require safety wiring through the head hole to prevent loosening under vibration, such as in aerospace, automotive, or heavy machinery applications. The reduced shank design is used in contexts where weight reduction or clearance for mating components is necessary, while maintaining strength for general-purpose fastening.
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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.