GB/T 12-2013
ActiveCup head square neck bolts
圆头方颈螺栓
Application Summary AI generated
GB/T 12-2013 specifies the dimensions, technical requirements, and marking of cup head square neck bolts, which feature a rounded head and a square neck under the head to prevent rotation during assembly. This standard is primarily applied in mechanical engineering and construction industries for fastening components in steel structures, agricultural machinery, and transportation equipment where a secure, anti-rotation bolt is needed. It is used in manufacturing and quality testing contexts to ensure interchangeability and compliance with Chinese national standards for threaded fasteners.
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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.