Review on Set Of 2 Stainless Steel Nipple Cast Pipe Fittings - 1/2" NPT Male Thread X 1/2" NPT Male Thread, 2" Length by James Trapkin

A nice looking pipe - but I would say this pipe nipple was at least a thread - probably two short. Pipe threads are tapered and the threads it had seemed to be about right for the outer threads. But after the threaded section there was quite a shoulder on the pipe nipple - and a coupling would screw on totally and then hit the shoulder and stop. If it didn't leak you were in business - if it did, there was no way to get an extra half turn because of the shoulder. We ended up chasing the threads with a threading die to add two more over the shoulder - something you shouldn't have to do - in order to attach the fittings.