MIL-B-17931E (AMENDMENT 1), MILITARY SPECIFICATION: BEARINGS, BALL, ANNULAR, FOR QUIET OPERATION (03 JUL 1991)

MIL-B-17931E (AMENDMENT 1), MILITARY SPECIFICATION: BEARINGS, BALL, ANNULAR, FOR QUIET OPERATION (03 JUL 1991)., This amendment forms a part of MIL-B-17931E, dated 27 July 1987, and is approved for use by all Departments and Agencies of the Department of Defense.