And with the 03, it'll be brass. Be careful you don't strip it out. Get a replacement plug fro IH (I got mine at the Ford dealer - its for a Low Cab Forward, so they may have a bit of a timne finding it). It was only $16 and makes draining MUCH easier.
Both plugs are an o-ring seal, so they do NOT have to be reefed on to seal. just get them snug & you'll have a much easier time of it next time.