Posted by mozark [69.35.200.126] on Friday, February 27, 2015 at 18:09:08 :
In Reply to: Re: Tap Size for Tranny Drain Plug? posted by CSCameron [71.223.243.161] on Friday, February 27, 2015 at 16:27:09 :
That's 1/2 NPT, as mentioned above.
NPT=National Pipe Thread, the 1/2" refers to the ID of pipe with that thread form, and unlike a bolt has nothing to do with the diameter of the threaded fitting.
MM