straight pipe thread

anyone have a union for 3/8 pipe? I need the thread dimension for
the mechinical coupling part. I think its national straight pipe
thanx jerry
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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.
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Harold and Susan Vordos
Fine person ya are for doin that for me harold! thanx jerry
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