Answer
Sep 04, 2020 - 09:44 AM
PG stands for Panzer-Gewinde, which is a German thread type. The threads have an angle of 80 degrees as well as a smaller depth than the other two thread types. NPT stands for National Pipe Thread and is an American thread type. The threads have an angle of 60 degrees and have a 1/16 taper so the threads compress against each other when tightened. Metric is the most commonly used type, as it is used internationally. The threads have an angle of 60 degrees, and in the case of cable glands, typically have a 1.5 mm pitch between threads.
