A-A-59558, COMMERCIAL ITEM DESCRIPTION: RING, LOCK, SERRATED (23 JUN 2000) [SUPERSEDING MS51990B] [S/S BY SAE-AS51990]

A-A-59558, COMMERCIAL ITEM DESCRIPTION: RING, LOCK, SERRATED (23 JUN 2000) [SUPERSEDING MS51990B] [S/S BY SAE-AS51990]., This commercial item description (CID) establishes the government acquisition requirements for serrated lock rings to be used as a general purpose fastener with a mechanical lock feature to resist rotation.