Please be forewarned! Using a die to chase a thead on a rigging terminal is
bad news. It sets up stress concentrations at the bottom of the V that will
lead to cracking and failure. Those threads are rolled and have radiused top
and bottom profiles just for that reason.
Steve

"A en M Sijtsma" wrote in message
...
I like to repair the threat of the rigging terminals. So have need for
withworth halve inch tapping and cuttingplates. But the the threat is
also left. Where can I order for that gear? Is there any website?
Thanks,
Arjen