MIL-B-81793/18
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, UNFLANGED, NON-SEPARABLE AND COUNTERBORED OUTER RING, CHROMIUM-ALLOY STEEL, ABEC 7P
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, UNFLANGED, NON-SEPARABLE AND COUNTERBORED OUTER RING, CHROMIUM-ALLOY STEEL, ABEC 7P