:wave: Terry,
As I mentioned in the PM, I cut the threads on the proto L2P CR123 body on a lathe,
so I am not sure about the taps and dies you are asking about.
Some other measurments that may be helpful though..
Thread pitch: 0.75mm
OD of threads: 18.90mm
Thread length: 6.0mm (You may want to make it a bit longer for the T series)
Body length: 34.10mm
ID of body: 16.70mm
OD of O-ring grooves: 17.25mm
O-ring size: ID 16.0mm / Thickness 1.0mm / Nitrile
Please note that the original body was designed for the L2P and you may need to
make adjustments for the T series.