Reply To: Replacing Flange/Drain in Cast Iron Sink Home › Forums › Public Forums › General Plumbing › Replacing Flange/Drain in Cast Iron Sink › Reply To: Replacing Flange/Drain in Cast Iron Sink 10 Feb 2003 at 10:52 pm #293946 Retired plbg1Participant It should have a hex nut holding it, if you cant get it loose then take a hacksaw and cut it as close to sink as you can and if part of nut is there take a small hammer and chisel and tap it off counter clock wise.
