On May 2, 3:17*am, "Jeff" wrote:
I see you have asked this question in several places. I have read some
for what they are worth.

The Japanese manufacturers seems to have gotten a mind about a JIS for an
'equivalent' connector. I don't know this for sure, but I have come
across some incompatible look alike connectors on some well known
Japanese brand high power amplifiers.

Your Chinese parts may have been copied from one of these incompatible
connectors.

Owen

The problem of metric PL259's is well known in the UK at least , and
adaptors and 'metric' connectors are available from Ham Radio dealers.

73
Jeff

That may explain the problem I had with a couple of connectors . I was
able to borrow a die to run over them. The metric threads must be very
close to the SAE. After rethreading them they worked but I didnt like
the way the threads looked so i trashed them.

Jimmie