MS21428C (NOTICE 1), MILITARY SPECIFICATION SHEET: BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA LIGHT DUTY, PRECISION (23 JUL 1988) [SUPERSEDED BY SAE-AS21428]

MS21428C (NOTICE 1), MILITARY SPECIFICATION SHEET: BEARING, BALL, AIRFRAME, ANTI-FRICTION, EXTRA LIGHT DUTY, PRECISION (23 JUL 1988) [SUPERSEDED BY SAE-AS21428].