MS21937B (NOTICE 2), MILITARY SPECIFICATION SHEET: NUT, CLUSTER FITTING, RETAINER (ASG) (15 MAY 2000) [SUPERSEDED BY SAE-AS21937]
MS21937B (NOTICE 2), MILITARY SPECIFICATION SHEET: NUT, CLUSTER FITTING, RETAINER (ASG) (15 MAY 2000) [SUPERSEDED BY SAE-AS21937].