MIL-B-81793/2
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, DEEP GROOVE, UNFLANGED, CHROMIUM-ALLOY STEEL, ABEC 7P
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, DEEP GROOVE, UNFLANGED, CHROMIUM-ALLOY STEEL, ABEC 7P