MS20500E (AMENDMENT 1), MILITARY SPECIFICATION: NUT, SELF-LOCKING, HEXAGON, 1200ºF, 125 KSI FTU (23 OCT 2002).
MS20500E (AMENDMENT 1), MILITARY SPECIFICATION: NUT, SELF-LOCKING, HEXAGON, 1200ºF, 125 KSI FTU (23 OCT 2002)., This amendment forms a part of MS20500E, dated 22 August 1986,
and is approved for use by all Departments and Agencies of the Department of Defense.