GB/T 9074.28-1988
ActiveCountersunk external toothed lock washer for assembly
组合件用锥形锁紧垫圈
Application Summary AI generated
This standard specifies the dimensions, technical requirements, and marking of countersunk external toothed lock washers designed for use in pre-assembled fastener combinations. It is applied in mechanical assemblies where a bolt or screw is paired with this washer to prevent loosening under vibration, commonly in automotive, machinery, and electronic equipment manufacturing. The standard ensures interchangeability and reliable locking performance in threaded joint applications.
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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.