MIL-B-81793/30
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, FLANGED, SEPARABLE AND STEPPED INNER RING, CHROMIUM-ALLOY STEEL, ABEC 7P
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, FLANGED, SEPARABLE AND STEPPED INNER RING, CHROMIUM-ALLOY STEEL, ABEC 7P