This part of IS0 12240 specifies dimensions and tolerances for angular contact radial spherical plain bearings. The specified tolerance values apply to finished@ angular contact radial spherical plain bearings before any coating or plating. Angular contact radial spherical plain bearings need not conform to the design illustrated but compliance is required as regards dimensions and tolerances specified. NOTE- Angular contact radial spherical plain bearings for airframe applications are not covered by this patt of IS0 12240.