Coupling to suit M12x1.5 HP male thread

Hi all,

Can anyone help me locate supplier(s) of M12x1.5 HP (metal washer seal) couplings.

I have a transmitter with this thread and have hit a wall in trying to trace a mating coupling to take it to BSP or Autoclave etc.. The transmitter is suitable for 1600 bar BTW.

Thanks in advance