Pipe threads: Help identifying?
After removing the drain I realized the threads are non continuous . On two opposing sides of the diameter there are flat spots that run the length of the fitting perpendicular to the threads, effective cutting the threads off completely in those areas. I think the water is leaking up this path.
The heart of my question : was it designed this way intentionally ? Were they assuming it would only be for showering? Or is this a machining defect? If it s not a defect , what is this type of threads called ? I ve scoured the internet seeking the answer to no avail !