How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Medium-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings
A galvanized finish gives these fittings fair corrosion resistance. They have the strength to handle medium-pressure applications.
Plugs with external hex drive and plugs with round body are also known as bull plugs; the center is hollow, which allows fluid to put pressure on the threads for a tight seal.
For technical drawings and 3-D models, click on a part number.
Plugs with External Hex Drive
Plugs with Round Body
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: ASME B31.1, ASME B31.3, ASTM A234, ASTM B633, MSS SP-95, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
| Pipe Size  | Plug Construction | Material | Each | |
NPT Male | ||||
|---|---|---|---|---|
| 1/8 | Hollow | Galvanized Steel | 0000000 | 000000 |
| 1/4 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 3/8 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 1 1/4 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 1 1/2 | Hollow | Galvanized Steel | 0000000 | 00000 |
| 2 | Hollow | Galvanized Steel | 0000000 | 000000 |
| 4 | Hollow | Galvanized Steel | 0000000 | 000000 |