Jeff wrote:
The TPI between the two standards (American and metric) - in this
case - are very close resulting in very little thread stock being
removed.

In fact the TPI's are not that close 24tpi for American (1.06mm pitch) and
1.5mm pitch for Metric fine.

Jeff



The metric PL259 has a pitch of 1.0 mm. It is not an ordinary metric
fine thread. (5/8 - 24 is not an ordinary fine thread either.)

73,
Gene
W4SZ