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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Low-Pressure Plated Brass Threaded Pipe Fittings
Used in low-pressure pipe lines, these brass fittings have a plating that makes them shiny and improves corrosion resistance.
Chrome-plated brass fittings are shinier and withstand corrosion better than nickel-plated brass fittings.
Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
For technical drawings and 3-D models, click on a part number.
Locknuts
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 125
- Specifications Met: ASTM B456
- Pipe Nipples and Pipe: Use Schedule 40 brass
| Pipe Size  | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female | ||||
|---|---|---|---|---|
Chrome-Plated Brass | ||||
| 1/8 | 200 psi @ 72° F | 125 psi @ 400° F | 00000000 | 000000 |
| 1/4 | 200 psi @ 72° F | 125 psi @ 400° F | 00000000 | 00000 |
| 3/8 | 200 psi @ 72° F | 125 psi @ 400° F | 00000000 | 00000 |
| 1/2 | 200 psi @ 72° F | 125 psi @ 400° F | 00000000 | 00000 |
| 3/4 | 200 psi @ 72° F | 125 psi @ 400° F | 00000000 | 00000 |
| 1 | 200 psi @ 72° F | 125 psi @ 400° F | 00000000 | 00000 |