Singer 285K repair/ replacement parts.  Bobbin case (oscillator type) #179585 (also #'s179583 or 179586). With original plastic bobbin and bobbin case position spring #81061 with mounting screw. Should work on other model Singers including:285, 285J, 285K.  Price includes shipping to lower 48.  Return for refund if fails on your Singer model.  GENUINE Singer parts!!!