MIL-B-81793/31
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, FLANGED, SEPARABLE AND STEPPED INNER RING, CORROSION RESISTANT STEEL, ABEC 5P
BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, FLANGED, SEPARABLE AND STEPPED INNER RING, CORROSION RESISTANT STEEL, ABEC 5P