N

Abbreviation for Newton Meters

Oxides of Nitrogen. A common pollutant emitted by gas engines at high temperature ¹⁾

Abbreviation for: National Pipe Straight Coupling (a U.S. standard in piping)

Abbreviation for National Pipe Tapered thread (a U.S. standard in piping): In contrast to straight threads that are found on a bolt, a taper thread will pull tight and therefore make a fluid-tight seal. This means that NPT fittings should be burr-free and lubricated using a lubricating material like lubricating paste or tape. ²⁾

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