GB/T 899-1988
ActiveDouble end studs--bm=1.5d
双头螺柱 bm=1.5d
Application Summary AI generated
This standard specifies the dimensions, tolerances, and technical requirements for double-end studs with a nominal thread engagement length (bm) equal to 1.5 times the nominal diameter (d). It is applied in mechanical engineering and industrial assembly contexts where studs are used to create threaded connections between components, particularly when the material of the nut-side component requires a longer engagement for strength or stability. The standard ensures interchangeability and reliability in applications such as flanges, pressure vessels, and heavy machinery.
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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.