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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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Extra-Thick-Wall Steel Threaded Pipe Nipples and Pipe
Extra-thick walls give this pipe excellent strength to handle high-pressure applications. It is also known as Schedule 160. Pipe is seamless, so it has a smooth interior for unrestricted flow. It is for use in noncorrosive environments.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
For technical drawings and 3-D models, click on a part number.
Fully Threaded
- For Use With: Air, Water, Oil, Natural Gas, Steam, Hydraulic Fluid
- Specifications Met: ASTM A733, ASTM A106, ANSI/ASME B1.20.1, ASTM A53
- Fittings: Use Class 3000 steel
- Flanges: Use Class 1500 steel
| Pipe Size | Dash Size | Lg. | Thread Type | Construction | Material | Each | |
| 1/2 | 08 | 1 1/8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 3/4 | 12 | 1 3/8" | NPT | Seamless | Black-Coated Steel | 00000000 | 0000 |
| 1 | 16 | 1 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 1 1/4 | 20 | 1 5/8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 1 1/2 | 24 | 1 3/4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 2 | 32 | 2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 2 1/2 | 40 | 2 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 3 | 48 | 2 5/8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4 | 64 | 2 7/8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
Threaded on Both Ends
- For Use With: Air, Water, Oil, Natural Gas, Steam, Hydraulic Fluid
- Specifications Met: ASTM A733, ASTM A106, ANSI/ASME B1.20.1, ASTM A53
- Fittings: Use Class 3000 steel
- Flanges: Use Class 1500 steel
| Lg. | Thread Type | Construction | Material | Each | |
1/2 Pipe Size—08 Dash Size | |||||
|---|---|---|---|---|---|
| 1 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 2" | NPT | Seamless | Black-Coated Steel | 00000000 | 0000 |
| 2 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 0000 |
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 0000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 00000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 00000 |
| 36" | NPT | Seamless | Black-Coated Steel | 0000000 | 00000 |
3/4 Pipe Size—12 Dash Size | |||||
| 1 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 0000 |
| 2" | NPT | Seamless | Black-Coated Steel | 00000000 | 0000 |
| 2 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 00000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 00000 |
| 36" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
1 Pipe Size—16 Dash Size | |||||
| 2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 2 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 00000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 36" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
1 1/4 Pipe Size—20 Dash Size | |||||
| 2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 2 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 36" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
1 1/2 Pipe Size—24 Dash Size | |||||
| 2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 2 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 36" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
2 Pipe Size—32 Dash Size | |||||
| 2 1/2" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 36" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
2 1/2 Pipe Size—40 Dash Size | |||||
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
3 Pipe Size—48 Dash Size | |||||
| 3" | NPT | Seamless | Black-Coated Steel | 00000000 | 00000 |
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
4 Pipe Size—64 Dash Size | |||||
| 4" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 5" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 6" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 8" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 10" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 12" | NPT | Seamless | Black-Coated Steel | 00000000 | 000000 |
| 18" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
| 24" | NPT | Seamless | Black-Coated Steel | 0000000 | 000000 |
Extra-Thick-Wall Galvanized Steel
Threaded Pipe Nipples and Pipe
Also known as Schedule 160, this pipe has extra-thick walls for excellent strength. It has a galvanized finish that provides better corrosion resistance than our plain steel pipe. Pipe is seamless, so it has a smooth interior for unrestricted flow.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
For technical drawings and 3-D models, click on a part number.
Fully Threaded
- For Use With: Air, Water, Oil, Natural Gas, Steam, Hydraulic Fluid
- Specifications Met: ASTM A733, ANSI/ASME B1.20.1, ASTM A106, ASTM A53
- Fittings: Use Class 3000 steel
Threaded on Both Ends
- For Use With: Air, Water, Oil, Natural Gas, Steam, Hydraulic Fluid
- Specifications Met: ASTM A733, ANSI/ASME B1.20.1, ASTM A106, ASTM A53
- Fittings: Use Class 3000 steel
| Lg. | Thread Type | Construction | Each | |
1/2 Pipe Size—08 Dash Size | ||||
|---|---|---|---|---|
| 1 1/2" | NPT | Seamless | 00000000 | 000000 |
| 2" | NPT | Seamless | 00000000 | 00000 |
| 3" | NPT | Seamless | 00000000 | 00000 |
| 4" | NPT | Seamless | 00000000 | 00000 |
| 6" | NPT | Seamless | 00000000 | 00000 |
3/4 Pipe Size—12 Dash Size | ||||
| 1 1/2" | NPT | Seamless | 00000000 | 00000 |
| 2" | NPT | Seamless | 00000000 | 00000 |
| 3" | NPT | Seamless | 00000000 | 00000 |
| 4" | NPT | Seamless | 00000000 | 00000 |
| 6" | NPT | Seamless | 00000000 | 00000 |
1 Pipe Size—16 Dash Size | ||||
| 2" | NPT | Seamless | 00000000 | 00000 |
| 3" | NPT | Seamless | 00000000 | 00000 |
| 4" | NPT | Seamless | 00000000 | 00000 |
| 6" | NPT | Seamless | 00000000 | 00000 |
1 1/4 Pipe Size—20 Dash Size | ||||
| 2" | NPT | Seamless | 00000000 | 00000 |
| 3" | NPT | Seamless | 00000000 | 00000 |
| 4" | NPT | Seamless | 00000000 | 00000 |
| 6" | NPT | Seamless | 00000000 | 00000 |
1 1/2 Pipe Size—24 Dash Size | ||||
| 2" | NPT | Seamless | 00000000 | 00000 |
| 3" | NPT | Seamless | 00000000 | 00000 |
| 4" | NPT | Seamless | 00000000 | 00000 |
| 6" | NPT | Seamless | 00000000 | 00000 |
2 Pipe Size—32 Dash Size | ||||
| 3" | NPT | Seamless | 00000000 | 00000 |
| 4" | NPT | Seamless | 00000000 | 00000 |
| 6" | NPT | Seamless | 00000000 | 00000 |