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Maximum Pressure Maximum Pressure |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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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Low-Pressure Iron and Steel Threaded Pipe Fittings
Use these fittings for low-pressure applications in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASME B16.3, UL Listed, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female × NPT Male | ||||||
1/2 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
3/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/4 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/4 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASME B16.3, UL Listed, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
1/4 | 1/8 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 000000 |
3/8 | 1/8 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
3/8 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 0000 |
1/2 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 0000 |
1/2 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 0000 |
3/4 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 0000 |
3/4 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
3/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 0000 |
1 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 0000 |
1 1/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/4 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/4 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/2 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/2 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
1 1/2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 1/2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
2 1/2 | 2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 00000 |
3 | 2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 000000 |
3 | 2 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 000000 |
4 | 3 | 150 psi @ 72° F | 150 psi @ 350° F | Black-Coated Iron | 000000000 | 000000 |
Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings
The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASTM A153, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 galvanized steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female × NPT Male | ||||||
1/2 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASTM A153, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 galvanized steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
1/4 | 1/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3/8 | 1/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
3/8 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
1/2 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
1/2 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
3/4 | 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
3/4 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
3/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
1 | 3/8 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 0000 |
1 1/4 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/4 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 3/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 1/4 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 00000 |
2 1/2 | 1 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
2 1/2 | 2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3 | 2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
3 | 2 1/2 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
4 | 3 | 150 psi @ 72° F | 150 psi @ 350° F | Galvanized Iron | 00000000 | 000000 |
Compact Extreme-Pressure Steel Threaded Pipe Fittings
These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are galvanized steel, which has fair corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Hydraulic Fluid, Water
- Specifications Met: ASTM A576
Pipe Size | Dash Size | |||||
---|---|---|---|---|---|---|
(A) | (B) | (A) | (B) | Max. Pressure | Each | |
NPT Female × NPTF Male | ||||||
1/2 | 1/4 | 08 | 04 | 3,000 psi @ 72° F | 000000000 | 000000 |
NPTF Female × NPTF Male | ||||||
1/8 | 1/4 | 02 | 04 | 5,000 psi @ 72° F | 000000000 | 00000 |
1/4 | 1/8 | 04 | 02 | 5,000 psi @ 72° F | 000000000 | 00000 |
1/4 | 3/8 | 04 | 06 | 5,000 psi @ 72° F | 000000000 | 00000 |
3/8 | 1/4 | 06 | 04 | 4,500 psi @ 72° F | 000000000 | 00000 |
3/8 | 1/2 | 06 | 08 | 4,500 psi @ 72° F | 000000000 | 00000 |
1/2 | 3/8 | 08 | 06 | 3,000 psi @ 72° F | 000000000 | 00000 |
1/2 | 3/4 | 08 | 12 | 3,000 psi @ 72° F | 000000000 | 00000 |
3/4 | 1/2 | 12 | 08 | 3,000 psi @ 72° F | 000000000 | 00000 |

- For Use With: Air, Hydraulic Fluid, Water
- Specifications Met: ASTM A576
Pipe Size | Dash Size | |||||
---|---|---|---|---|---|---|
(A) | (B) | (A) | (B) | Max. Pressure | Each | |
NPTF Female | ||||||
1/4 | 1/8 | 04 | 02 | 5,000 psi @ 72° F | 000000000 | 00000 |
Medium-Pressure Iron and Steel Threaded Pipe Fittings
With better strength than our low-pressure iron and steel pipe fittings, these can handle medium-pressure applications. They are for use in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class : 300
- Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 or 600 steel
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
3/8 | 1/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
1/2 | 3/8 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
3/4 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 1/2 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 | 3/4 | 2,000 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 3/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/4 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
1 1/2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 00000 |
2 | 1 1/4 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
2 | 1 1/2 | 1,500 psi @ 72° F | 300 psi @ 550° F | Iron | 00000000 | 000000 |
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.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Natural Gas, Steam, Water
- Pressure Class : 300
- Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel