wrote in message
oups.com...
anyone have a union for 3/8 pipe? I need the thread dimension for
the mechinical coupling part. I think its national straight pipe
thread.


thanx jerry


Near as I can tell, they are not standardized. I've had occasion where
the entire union would have to be replaced because of the differences.

I have one in my hands. The major diameter of the male portion of the
union measures 1.150", with an 18 pitch thread.

Harold