System of Measurement System of Measurement |
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Shape Shape |
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![]() | Straight |
Material Material |
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Thread Type Thread Type |
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Connection Style Connection Style |
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Threaded |
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Push to Connect |
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Compression |
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Flared |
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Yor-Lok |
For Use With For Use With |
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Push-to-Connect Type Push-to-Connect Type |
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![]() | Standard |
Maximum Pressure Maximum Pressure |
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Length Length | Show |
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Length Length | Hide |
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Flared Angle Flared Angle |
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Minimum Temperature Minimum Temperature |
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Maximum Vacuum Maximum Vacuum |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Thread Size Thread Size |
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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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Push-to-Connect Tube Fittings for Air

- Temperature Range: 0° to 170° F
- Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
- Specifications Met: ISO 14743, except polybutylene plastic fittings
Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance.
Identification rings (sold separately) snap over the release ring so you can color-code your lines.
Clips (sold separately) align and organize your tubing and fittings.
For technical drawings and 3-D models, click on a part number.
Nickel-Plated Brass Push-to-Connect Tube Fittings for Air

- For Use With: Air, Lubricated Air
- Temperature Range: 0° to 140° F, except plugs and straight connectors are 32° to 140° F
- Tubing: Fittings with Release Ring and Fittings with no Release Type: Use with firm or hard (Durometer 95A-60D) nylon plastic, polyethylene plastic or polyurethane rubber
Fittings with Release Sleeve: Use with firm or hard (Durometer 95A-60D) polyethylene plastic or polyurethane rubber
Made of nickel-plated brass, these fittings have better corrosion resistance than unplated brass fittings. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring or sleeve and pull the tubing out of the fitting.
Fittings with release sleeve are easier to disconnect than fittings with a release ring because they are seamless and won't collect dirt and debris.
For technical drawings and 3-D models, click on a part number.

For Tube OD | Material | Release Type | Max. Pressure | Each | |
1/2" | Nickel-Plated Brass | Sleeve | 230 psi @ 72° F | 00000000 | 000000 |
Rotating Push-to-Connect Tube Fittings for Air

- Temperature Range: 25° to 140° F
- Tubing: Use with firm or hard (Durometer 55D-60D, Durometer 91A-97A, or Rockwell R70-R85) nylon plastic or polyurethane rubber
Ball bearings allow these fittings to rotate 360°, even after they are tightened. Fittings rotate at the pipe end and have a special seal that reduces friction to allow for continuous rotation. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.
Fittings with PTFE thread sealant offer extra protection against leaks.
For technical drawings and 3-D models, click on a part number.


For Tube OD | Pipe Size | Bearing Construction | Tube Connection Material | Pipe Connection Material | Color | Release Ring Color | Max. Pressure | Features | Each | |
NPT Threads | ||||||||||
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3/8" | 3/8 | Single Row | Polybutylene Plastic | Nickel-Plated Brass | Gray | Red | 140 psi @ 72° F | PTFE Thread Sealant | 000000000 | 000000 |
Yor-Lok Fittings for Stainless Steel Tubing

A nut with two sleeves (ferrules) gives these fittings 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. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
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 | |||||||||
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OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | For Hole Dia. | For Max. Wall Thick. | Each | |
NPT Threads | |||||||||
3/8" | 0.035" to 0.065" | 1/4 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 9/16" | 9/16" | 00000000 | 000000 |

For Tube | ||||||
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OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |

For Tube | ||||||
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OD | Wall Thick. | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |

PTFE sleeves are plastic instead of stainless steel, so they won’t damage tubing.
For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
3/8" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 00000 |
45° Flared Fittings for Copper and Brass Tubing

- Temperature Range: -65° to 250° F
- Tubing: Use with seamless brass and copper that meets ASTM B280
- Specifications Met: SAE J512, SAE J513, UL Listed, except socket-connect fittings and fittings with BSPT thread meet SAE J512 and SAE J513 only
No sleeve is required to assemble these fittings, which makes for a faster, more convenient installation compared to 37° flared fittings. They require a nut (sold separately) for each tube end. Fittings are also known as refrigeration and SAE fittings. They are brass for good corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
For technical drawings and 3-D models, click on a part number.

- For Use With:
NPTF Threads: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water
BSPT Threads: Air, Cutting Oil, Diesel Fuel, Mineral Oil, Refrigerant, Water



- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water
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.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.

- Temperature Range: See table
For Tube | |||||||
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OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Each | |
NPTF Threads | |||||||
1/2" | 0.049" | 1/2 | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 00000 |

- Temperature Range: See table
For Tube OD | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
1/2" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 00000 |

- Temperature Range: See table
For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
1/2" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 00000 |