MIL MIL-B-81793/21 Amendment 1

BEARING, BALL, ANNULAR, FOR INSTRUMENTS AND PRECISION ROTATING COMPONENTS, ANGULAR CONTACT, FLANGED, NON-SEPARABLE AND COUNTERBORED OUTER RING ON FLANGE SIDE, CHROMIUM-ALLOY STEEL, ABEC 5P
Amendment by Military Specifications and Standards, 10/31/1994