NPT Threaded Plugs

NPT threaded plugs to protect Nominal pipe internal threads. These plugs will protect your product during shipping and storage until needed for use.

NPT Threaded Plugs Description:

  • Used to protect NPT threads on the inside.
  • Square Head Design.
  • Made from High-Density Polyethylene.
  • BLUE in color

National Pipe Thread Taper (NPT) is a U.S. standard for tapered threads on threaded pipes and fittings. In contrast to straight threads on a bolt, a taper thread will pull tight and therefore make a fluid-tight seal. NPT is defined by ANSI/ASME standard B1.20.1. Pipe threads are different from machine-screw and bolt threads. The biggest difference is the taper on pipe threads. Nominal Pipe Size (NPS) is loosely related to the inside diameter of Schedule 40 pipe.