0.3100" overall width 0.3935" bore diameter bearing type is single row, two piece, riveted cage, inner land riding cage; used on J85-5j 13d 21b non-loading groove, non-separable
0.2802" overall width 0.3748" bore diameter bearing contains shields made of inert fibrous material bonded to an aluminum washer; or polytetrafluoroethylene seal plus stainless shields on both sides; or buna n seal with a 430 stainless steel insert passivate ball surface treated non-loading groove, non-separable