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For Use With For Use With |
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For Pipe Material For Pipe Material |
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Hex Width Hex Width |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Maximum Pressure Maximum Pressure |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Pressure Class Pressure Class |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Finish Finish |
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Panel Nut Shape Panel Nut Shape |
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Fabrication Fabrication |
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Thread Fit Thread Fit |
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About Conduit
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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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About Nuts, Materials, and Finishes
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Low-Pressure Brass and Bronze Threaded Pipe Fittings
Use these fittings in low-pressure flow applications. They have good corrosion resistance. Fittings rated for use with drinking water meet NSF/ANSI 61 safety standards.
Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration. Locknuts that meet DIN 431 adhere to international standards for locknut dimensions.
NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.

- For Use With: See table
- Pressure Class: See table
- Specifications Met: See table
- Pipe Nipples and Pipe: See table
- Flanges: See table
For Pipe | For Flange | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Max. Pressure | Pressure Class | Material | Schedule | Material | Class | Material | For Use With | Specifications Met | Each | |
NPSL Female | |||||||||||
1/8 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
1/4 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
3/8 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
1/2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
3/4 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
1 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 0000 |
1 1/4 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
1 1/2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Drinking Water, Natural Gas, Oil | ASME B1.20.1, ASME B16.15, ASTM A584, NSF/ANSI 61 | 00000000 | 00000 |
2 1/2 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Natural Gas, Oil | ASME B16.15 | 00000000 | 00000 |
3 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Natural Gas, Oil | ASME B16.15 | 00000000 | 000000 |
4 | 200 psi @ 72° F | 125 | Brass | 40 | Brass | 150 | Brass | Air, Natural Gas, Oil | ASME B16.15 | 00000000 | 000000 |
BSPP Female | |||||||||||
1/8 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 0000 |
1/4 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 0000 |
3/8 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 0000 |
1/2 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 0000 |
3/4 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 0000 |
1 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 00000 |
1 1/4 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 00000 |
1 1/2 | Not Rated | __ | Brass | __ | Brass | __ | Brass | Air, Natural Gas, Oil | DIN 431 | 0000000 | 00000 |
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.

- 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 | ||||
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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 |
High-Pressure Brass Threaded Pipe Fittings
These fittings have the strength to handle high-pressure applications. They are brass for good corrosion resistance.
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 Metal Conduit Fittings

Secure threaded metal conduit fittings to a knockout in an outlet box or enclosure.
For technical drawings and 3-D models, click on a part number.
Brass Hex Panel Nuts

These panel nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. They can be fastened with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels.
Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.
For technical drawings and 3-D models, click on a part number.
UNEF Threads
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