BELOW IS AN EASY TRICK FOR IDENTIFYING SAE VS JIC FLARES. GRAB TWO FITTINGS HOLD THE TAPERS TOGETHER AND IT BECOMES OBVIOUS.
Helm Pumps, Steering Rams and ZF Transmissions often have some less common threads identified as PT, G or JIS These are all based on British Pipe threads and can be straight or tapered. Some examples below.
BELOW: PT Threads are the same as BSTP: British Standard Pipe thread. 55Ā° Thread angle. Tapered Pipe Threads.
These look like NPT but they aren’t compatible with NPT due to the different 55Ā° thread form.
Below: PT O-ring Adapter. Threads on the left are 3/8″ PT or BSPP
