GB/T 801-2021
ActiveCup head square neck bolts with small head and short neck—Product grade B
小半圆头低方颈螺栓 B级
Application Summary AI generated
GB/T 801-2021 specifies the dimensions, technical requirements, and marking for cup head square neck bolts with a small head and short neck, classified as product grade B. This standard is applied in mechanical assembly contexts where a low-profile bolt head and a square neck are needed to prevent rotation during tightening, such as in automotive, agricultural machinery, or structural connections. It ensures interchangeability and quality control for bolts used in applications requiring moderate precision and load-bearing capacity.
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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.