MIL-S-45387B (AMENDMENT 2), MILITARY SPECIFICATION, SPRINGS, TORSION-BAR, SUSPENSION (15 APR 1992)., This amendment forms a part of MIL-S-45387B(AT), dated23 April 1964, and is approved for use within the U.S. ArmyTank Automotive Command and is available for use by allDepartments and Agencies of the Department of Defense.