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Maximum Pressure Maximum Pressure |
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For Hole Diameter For Hole Diameter |
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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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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.
Through-wall fittings are also known as bulkhead couplings; they mount through your wall to create an inlet or outlet. When installing, the gasket should be on the inside of the wall. BSPP and metric male threads have either a gasket, or a gasket and washer, to prevent leaks.
For technical drawings and 3-D models, click on a part number.
Threads with
Gasket and Washer
- For Use With: Air, Hydraulic Fluid, Oil, Water
- Specifications Met: ISO 1179, ISO 8434-6
Extreme-Pressure Steel Threaded Pipe Fittings
The strongest steel fittings we offer, these can withstand extreme-pressure applications.
Galvanized and zinc-plated steel fittings have better corrosion resistance than plain steel fittings. PTFE-coated steel fittings have better corrosion resistance than galvanized and zinc-plated steel 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, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Temperature Range: -100° to 500° F
- Pipe Nipples and Pipe: Use Schedule XXH steel
- Flanges: Use Class 1500 steel
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Material | Each | |
NPT Female | ||||||
|---|---|---|---|---|---|---|
| 1/8 | 02 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 000000 |
| 1/4 | 04 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 3/8 | 06 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1/2 | 08 | 10,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 3/4 | 12 | 5,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1 | 16 | 5,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1 1/4 | 20 | 5,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 1 1/2 | 24 | 3,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 00000 |
| 2 | 32 | 3,000 psi @ 72° F | 5,000 psi @ 500° F | Galvanized Steel | 0000000 | 000000 |
Low-Pressure Iron and Steel Threaded Pipe Fittings
Use these fittings for low-pressure applications in noncorrosive environments.
Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration. Some meet DIN 431, which is an international standard for pipe fitting locknut dimensions.
NPTF (Dryseal) threads, NPSC (National Pipe Straight Coupling) threads, and 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: Air, Natural Gas, Oil, Steam, Water
- Pressure Class:
NPSL: 150 - Specifications Met:
NPSL: ASME B16.14
BSPP: DIN 431 - Pipe Nipples and Pipe:
NPSL: Use Schedule 40 steel
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.
Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
NPSC (National Pipe Straight Coupling) threads and 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: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASME B16.14
- Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
- Flanges: Use Class 150 galvanized steel
| Pipe Size | Material | Each | |
NPSL Female | |||
|---|---|---|---|
| 1/4 | Galvanized Steel | 00000000 | 00000 |
Yor-Lok Fittings for Steel Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil
- Tubing: Use with seamless steel
- Specifications Met: See table
These fittings include a nut with two sleeves (ferrules) for extra gripping power. The sleeves bite into tubing as you tighten the nut, creating a strong seal. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. Fittings are zinc-plated steel for fair corrosion resistance. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
For technical drawings and 3-D models, click on a part number.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
For Tube | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| OD, mm | Wall Thick., mm | Pipe Size | Material | Max. Pressure | Temp. Range, °F | For Hole Dia., mm | For Max. Wall Thick., mm | Specifications Met | Each | |
NPT Threads | ||||||||||
| 6 | 0.8 | 1/8 | Zinc-Plated Steel | 4,400 psi @ 72° F | -20° to 800° | 11.5 | 10.2 | ASME B31.3 | 00000000 | 00000 |
| 6 | 0.8 | 1/4 | Zinc-Plated Steel | 4,400 psi @ 72° F | -20° to 800° | 11.5 | 10.2 | ASME B31.3 | 00000000 | 0000 |
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
For Tube | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | For Hole Dia. | For Max. Wall Thick. | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | 5/16" | 1/2" | ASTM A108 | 00000000 | 000000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | 7/16" | 13/32" | ASTM A108 | 00000000 | 00000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | 9/16" | 7/16" | ASTM A108 | 00000000 | 00000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | 3/4" | 1/2" | ASTM A108 | 00000000 | 00000 |
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 00000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 6mm | 0.8mm | Zinc-Plated Steel | 4,400 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 000 |
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Front Sleeve Material | Back Sleeve Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 6,800 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 4,850 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 3,100 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 2,300 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 6mm | 0.8mm | Zinc-Plated Steel | 316 Stainless Steel | 4,400 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
Compression Fittings for Steel Tubing
- For Use With: Inch: Air, Hydraulic Fluid, Water
Metric: Hydraulic Fluid - Tubing: Inch: Use with welded steel
Metric: Use with seamless steel - Specifications Met: Inch: SAE J514
Metric: ISO 8434, DIN 2353
A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless and bite fittings.
Zinc-plated steel fittings have fair corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: See table
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,000 psi @ 72° F | -65° to 400° | 7/16" | 3/8" | 000000000 | 000000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,000 psi @ 72° F | -65° to 400° | 9/16" | 13/32" | 000000000 | 0000 |
| 1/2" | 0.049" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 3/4" | 13/32" | 000000000 | 00000 |
| 3/4" | 0.065" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 1 1/16" | 7/16" | 000000000 | 00000 |
| 6mm | Not Rated | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 13mm | 23mm | 00000000 | 00000 |
| 8mm | Not Rated | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 15mm | 24mm | 00000000 | 00000 |
| 10mm | Not Rated | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 17mm | 24mm | 00000000 | 00000 |
| 12mm | Not Rated | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 19mm | 25mm | 00000000 | 00000 |
- Temperature Range: See table
| For Tube OD | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
| 1/4" | Zinc-Plated Steel | 4,000 psi @ 72° F | -65° to 400° | 000000000 | 00000 |
| 3/8" | Zinc-Plated Steel | 3,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
| 1/2" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
| 3/4" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
| 6mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 0000 |
| 8mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 0000 |
| 10mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 0000 |
| 12mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 0000 |
- Temperature Range: See table
| For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
| 1/4" | Zinc-Plated Steel | 4,000 psi @ 72° F | -65° to 400° | 000000000 | 00000 |
| 3/8" | Zinc-Plated Steel | 3,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
| 1/2" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
| 3/4" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
| 6mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 000 |
| 8mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 000 |
| 10mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 000 |
| 12mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 000 |
37° Flared Fittings for Steel Tubing
- Tubing: Use with seamless steel
- Specifications Met: SAE J514
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately. Fittings are zinc-plated steel for 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, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on steel tubing that is flared to 37°. Sleeves are zinc-plated steel for fair corrosion resistance. They are also known as ferrules.
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F