1 npt thread diameter
- 1 4 npt thread diameter
- 1 2 npt thread diameter
- 1 8 npt thread diameter
- 1 4 npt thread outside diameter
- 1 16 npt thread diameter
- 1 inch npt thread diameter
- 1 2 inch npt thread diameter
- 1 2 npt thread major diameter
- 1 4 npt thread major diameter
- 1 2 npt thread outer diameter
- 1 8 27 npt thread major diameter
- 1 4 18 npt thread minor diameter
- 1/4-18 npt thread major diameter