FF-B-2844, FEDERAL SPECIFICATION: BEARINGS, BALL, ANNULAR (GENERAL PURPOSE) (15 FEB 1994) [SUPERSEDING FF-B-171A] [S/S BY A-A-59643, A-A-59644, A-A-59645, A-A-59646, A-A-59647, & A-A-59648]
FF-B-2844, FEDERAL SPECIFICATION: BEARINGS, BALL, ANNULAR (GENERAL PURPOSE) (15 FEB 1994) [SUPERSEDING FF-B-171A] [S/S BY A-A-59643, A-A-59644, A-A-59645, A-A-59646, A-A-59647, & A-A-59648]., This specification covers annular ball bearings for general purpose use that conform to boundary dimensions and Annular Bearing Engineering Committee (ABEC) ABEC-1, ABEC-3, and ABEC-5 tolerances as defined in the Amercian National Standards Institute (ANSI) Anti-Friction Bearing Manufacturers Association (AFBMA) STD 20.