Block drain plug

Does anyone know the part number for the block drain plug in a 4.0 engine?
I was reinstalling the drain plug when it fell off the end of my 8mm square drive socket and I am unable to find it.

It appears that the part number is 6034166. I say appears because the description is 'Plug-Cylinder Block Oil Hole' but the part does look like the one I lost.

6034166 has been discontinued, but 3/8 in NPT pipe plug will work. Napa has one that looks close to the original, but the drive is 5/16 instead of 8MM. That part number is NOE 7041885.

I hope this helps someone else.

@LONGJP2 I will take another look for the plug but, I an starting to think it was abducted by aliens.