"HRBE" wrote in message
...

I assumed wrongly that there was an International standard with regard to
the PL259/SO239.

Naturally when a known part number is advertised, one would expect that
the normal 5/8" x 24 threads per inch standard (UNEF) would be followed.


The original PL-259 was a World War 2 US military JANAP standard.
It had specifications for all the critical fit parts of a PL-259 connector.
Eventually the JANAP standard morphed into a US Mil-Spec Standard.
The current standard hasn't changed much since WW2.
A metric thread does not meet the standard.
If somebody says its a PL-259; they should meet that standard or say it is
similar but NOT compatible.
Too many manufacturers have gotten sloppy in their QC.