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Precision Extreme-Pressure Brass Threaded Pipe Fittings
Also known as instrumentation fittings, these have the most precise threads and the tightest tolerances of all the brass pipe fittings we offer. Fittings are brass for good corrosion resistance.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met: See table
Pipe Size | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPT Female | |||||
---|---|---|---|---|---|
1 | 2,200 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 000000 |

- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
Pipe Size | Lg. | Max. Pressure | Max. Steam Pressure | Each | |
NPT Male | |||||
---|---|---|---|---|---|
1/8 | 3/4" | 5,600 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
1/4 | 1 1/8" | 4,100 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
3/8 | 1 1/8" | 4,000 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
1/2 | 1 1/2" | 3,900 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
3/4 | 1 1/2" | 3,800 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |

- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met: See table
Pipe Size | Lg. | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPT Male | ||||||
---|---|---|---|---|---|---|
1/8 | 1 1/16" | 5,600 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/8 | 2" | 5,600 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/8 | 2 1/2" | 5,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
1/8 | 3" | 5,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
1/4 | 1 7/16" | 4,100 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/4 | 2" | 4,100 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/4 | 2 1/2" | 4,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
1/4 | 3" | 4,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
1/4 | 4" | 4,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
3/8 | 1 7/16" | 4,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
3/8 | 2" | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
1/2 | 1 7/8" | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/2 | 2" | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/2 | 2 1/2" | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 000000 |
1/2 | 3" | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
3/4 | 1 27/32" | 3,600 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |

- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met: See table
Pipe Size | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPT Female × NPT Male | |||||
---|---|---|---|---|---|
3/4 | 2,200 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 000000 |

- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met: See table
Pipe Size | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
BSPT Male × NPT Male | |||||
---|---|---|---|---|---|
1/8 | 5,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 000000 |
1/4 | 4,100 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
3/8 | 4,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/2 | 3,800 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
3/4 | 3,600 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |

- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met: See table
Pipe Size | ||||||
---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPT Male | ||||||
1/8 | 1/16 | 5,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 000000 |
1/4 | 1/8 | 4,100 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
3/8 | 1/8 | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.3 | 00000000 | 00000 |
3/8 | 1/4 | 4,000 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/2 | 1/4 | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
1/2 | 3/8 | 3,900 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
3/4 | 1/2 | 3,800 psi @ 72° F | 1,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 00000000 | 00000 |
High-Pressure Nipples for Compressed Gas
Commonly used in high-pressure welding applications, these nipples connect your tank to the inlet of a pressure regulator. One side has a threaded pipe end and the other side has a rounded end that sits inside a threaded nut (sold separately) so you can make a threaded connection.
Brass nipples have good corrosion resistance and are softer than 316 stainless steel nipples, so they're easier to thread together. Chrome-plated brass nipples have better corrosion and wear resistance than unplated brass nipples and have a bright, shiny appearance. 316 stainless steel nipples have excellent corrosion resistance.
Nipples with filter help keep the line clean by preventing small particles and other impurities from entering your pressure regulator.
Nipples that tighten by hand should be paired with a nut with a plastic grip.
For technical drawings and 3-D models, click on a part number.

- Maximum Pressure: See table
- Maximum Temperature: 120° F
Regulator Connection | |||||||
---|---|---|---|---|---|---|---|
For Number (Max. Pressure) | Pipe Size | Thread Type | Lg. | For Use With | Features | Each | |
Brass—Tighten With Wrench | |||||||
CGA 170 (3,000 psi @ 72° F) | 1/8 | NPT | 1 1/4" | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | __ | 000000000 | 000000 |
CGA 180 (3,000 psi @ 72° F) | 1/8 | NPT | 2" | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | __ | 000000000 | 00000 |
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F) | 1/4 | NPT | 2 1/2" | Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon | __ | 000000000 | 0000 |
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F) | 1/4 | NPT | 3" | Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon | __ | 000000000 | 0000 |
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F) | 1/4 | NPT | 3 1/2" | Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon | __ | 000000000 | 0000 |
CGA 680, 695 (3,000 psi @ 72° F); CGA 702, 703 (4,700 psi @ 72° F) | 1/4 | NPT | 3" | Air, Argon, Flammable Gases, Helium, Hydrogen, Krypton, Methane, Natural Gas, Neon, Nitrogen, Xenon | __ | 000000000 | 00000 |
CGA 680, 695 (3,000 psi @ 72° F); CGA 702, 703 (5,500 psi @ 72° F) | 1/4 | NPT | 3 1/64" | Air, Argon, Flammable Gases, Helium, Hydrogen, Krypton, Methane, Natural Gas, Neon, Nitrogen, Xenon | Filter | 000000000 | 00000 |
BS 341 No. 3 (4,350 psi @ 72° F) | 1/4 | NPT | 2 1/2" | Air, Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Perfluoropropane | __ | 000000000 | 00000 |
DIN 477 No. 6 (4,350 psi @ 72° F) | 1/4 | NPT | 3 1/2" | Argon, Carbon Dioxide, Cyclobutane, Dichlorotetrafluoroethane, Helium, Krypton, Sulfur Hexafluoride, Trifluoroethane, Xenon | __ | 000000000 | 00000 |
Brass—Tighten By Hand | |||||||
CGA 510 (500 psi @ 72° F); CGA 580, 590 (3,000 psi @ 72° F) | 1/4 | NPT | 3 33/64" | Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon | __ | 000000000 | 00000 |
Chrome-Plated Brass—Tighten With Wrench | |||||||
CGA 510 (500 psi @ 72° F); CGA 580, 590 (3,000 psi @ 72° F) | 1/4 | NPT | 3 1/2" | Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon | __ | 000000000 | 00000 |
316 Stainless Steel—Tighten With Wrench | |||||||
CGA 677 (6,400 psi @ 72° F) | 1/4 | NPT | 2 1/2" | Argon, Helium, Krypton, Neon, Nitrogen, Xenon | __ | 000000000 | 00000 |


- Maximum Pressure: See table
- Maximum Temperature: 120° F
Number | Gender | Thread Size | Pipe Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
Brass | |||||||||
---|---|---|---|---|---|---|---|---|---|
CGA 500 | Male | 0.880"-14 | __ | NGO | Right Hand | 3,000 psi @ 72° F | Medical Gas Mixtures | 000000000 | 000000 |
CGA 510 | Male | 0.880"-14 | __ | NGO | Left Hand | 500 psi @ 72° F | Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride | 000000000 | 0000 |
CGA 580 | Male | 0.960"-14 | __ | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 000000000 | 0000 |
CGA 590 | Male | 0.960"-14 | __ | NGO | Left Hand | 3,000 psi @ 72° F | Sulfur Hexafluoride | 000000000 | 0000 |
CGA 680 | Male | 1.040"-14 | __ | NGO | Right Hand | 4,700 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 000000000 | 00000 |
CGA 702 | Male | 1.120"-14 | __ | NGO | Right Hand | 6,400 psi @ 72° F | Air | 000000000 | 00000 |
Brass with Plastic Grip | |||||||||
CGA 510 | Male | 0.880"-14 | __ | NGO | Left Hand | 500 psi @ 72° F | Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride | 000000000 | 00000 |
CGA 580 | Male | 0.960"-14 | __ | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 000000000 | 00000 |
Aluminum-Plated Brass | |||||||||
CGA 170 | Female | 9/16"-18 | __ | UN/UNF (CGA) | Right Hand | 3,000 psi @ 72° F | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | 000000000 | 00000 |
CGA 180 | Female | 5/8"-18 | __ | UN/UNF (CGA) | Right Hand | 3,000 psi @ 72° F | Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene | 000000000 | 00000 |
BS 341 No. 3 | Male | __ | 5/8 | BSPT | Right Hand | 3,000 psi @ 72° F | Air, Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Perfluoropropane | 000000000 | 00000 |
DIN 477 No. 6 | Female | W 21.8 | __ | Metric | Right Hand | 3,000 psi @ 72° F | Argon, Carbon Dioxide, Cyclobutane, Dichlorotetrafluoroethane, Helium, Krypton, Sulfur Hexafluoride, Trifluoroethane, Xenon | 000000000 | 00000 |
Chrome-Plated Brass | |||||||||
CGA 510 | Male | 0.880"-14 | __ | NGO | Left Hand | 500 psi @ 72° F | Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride | 000000000 | 00000 |
CGA 580 | Male | 0.960"-14 | __ | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 000000000 | 00000 |
CGA 590 | Male | 0.960"-14 | __ | NGO | Left Hand | 3,000 psi @ 72° F | Sulfur Hexafluoride | 000000000 | 00000 |
316 Stainless Steel | |||||||||
CGA 677 | Female | 1.035"-14 | __ | NGO | Left Hand | 6,400 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 000000000 | 00000 |
High-Pressure Threaded Fittings for Compressed Gas
Designed to handle high-pressure welding applications, these fittings are commonly used to connect pressure regulators to compressed gas tanks or cylinders. Fittings are also known as CGA (Compressed Gas Association) fittings. They are brass for good corrosion resistance.
Fittings with left-hand threads are identified with a notch in the nut.
Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.
For technical drawings and 3-D models, click on a part number.

- Maximum Pressure: See table
- Maximum Temperature: 120° F
CGA Number | Tank Connection | Regulator Connection | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Tank | Regulator | Thread Size | Thread Type | Thread Direction | Thread Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
Brass | |||||||||||
320 | 580 | 0.830"-14 | NGO | Right Hand | 0.960"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Carbon Dioxide, Helium, Krypton, Neon, Nitrogen, Xenon | 0000000 | 000000 |
346 | 580 | 0.830"-14 | NGO | Right Hand | 0.960"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Air, Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 0000000 | 00000 |
350 | 580 | 0.830"-14 | NGO | Left Hand | 0.960"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Carbon Monoxide, Ethane, Ethylene, Helium, Hydrogen, Krypton, Methane, Methyl Fluoride, Natural Gas, Neon, Nitrogen, Xenon | 0000000 | 00000 |
540 | 580 | 0.908"-14 | NGO | Right Hand | 0.960"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Xenon | 0000000 | 00000 |

- Maximum Pressure: See table
- Maximum Temperature: 120° F
CGA Number | Tank Connection | Regulator Connection | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Tank | Regulator | Thread Size | Thread Type | Thread Direction | Thread Size | Thread Type | Thread Direction | Max. Pressure | For Use With | Each | |
Brass | |||||||||||
580 | 320 | 0.960"-14 | NGO | Right Hand | 0.830"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Carbon Dioxide, Helium, Krypton, Neon, Nitrogen, Xenon | 0000000 | 000000 |
580 | 346 | 0.960"-14 | NGO | Right Hand | 0.830"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Air, Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 0000000 | 00000 |
580 | 350 | 0.960"-14 | NGO | Right Hand | 0.830"-14 | NGO | Left Hand | 3,000 psi @ 72° F | Argon, Carbon Monoxide, Ethane, Ethylene, Helium, Hydrogen, Krypton, Methane, Methyl Fluoride, Natural Gas, Neon, Nitrogen, Xenon | 0000000 | 00000 |
580 | 540 | 0.960"-14 | NGO | Right Hand | 0.908"-14 | NGO | Right Hand | 3,000 psi @ 72° F | Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Xenon | 0000000 | 00000 |
580 | 555 | 0.960"-14 | NGO | Right Hand | 0.908"-14 | NGO | Left Hand | 3,000 psi @ 72° F | Argon, Butane, Helium, Krypton, LP Gas, Neon, Nitrogen, Xenon | 0000000 | 00000 |

- Maximum Pressure: 3,000 psi @ 72° F
- Maximum Temperature: 120° F
CGA Number | Tank Connection | Regulator Connection | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Tank | Regulator | Thread Size | Thread Type | Thread Direction | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | ||||||||||
590 | 580 | 0.960"-14 | NGO | Left Hand | 0.960"-14 | NGO | Right Hand | Argon, Helium, Krypton, Neon, Nitrogen, Sulfur Hexafluoride, Xenon | 0000000 | 000000 |
Threaded Hose Fittings for Compressed Gas
Use these fittings to connect welding hose to pressure regulators and torches. They are also known as CGA (Compressed Gas Association) fittings. Fittings are brass for good corrosion resistance.
Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.
For technical drawings and 3-D models, click on a part number.

- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | |||||||
---|---|---|---|---|---|---|---|
032 x 022 | B | 5/8"-18 x 9/16"-18 | UN/UNF (CGA) | Right Hand | Argon, Helium, Krypton, Neon, Nitrogen, Oxygen, Xenon | 0000000 | 000000 |

- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
Male Hose Connection | Male Pipe Connection | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
CGA Number | Gas Fitting Size | Thread Size | Thread Type | Thread Direction | Pipe Size | Thread Type | Thread Direction | For Use With | Each | |
Brass | ||||||||||
032 | B | 5/8"-18 | UN/UNF (CGA) | Right Hand | 1/4 | NPT | Right Hand | Argon, Helium, Krypton, Neon, Nitrogen, Xenon | 0000000 | 000000 |
Barbed Hose Fittings for Compressed Gas
Commonly used in low-pressure welding applications, these fittings connect downstream of your tank and pressure regulator. Slide the barbed end into rubber hose and secure with a crimp-on hose ferrule. Fittings are brass for good corrosion resistance.
Adapters let you adapt to a threaded end so you can connect welding hose to torches or pressure regulators. They consist of a barbed shaft with a rounded end that sits inside a threaded CGA nut (sold separately) so you can make a threaded hose connection.
For technical drawings and 3-D models, click on a part number.

- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
- Attachment Type: Use Crimp-On Hose Ferrules
Adapters | Nuts with Right-Hand Threads | Nuts with Left-Hand Threads | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Hose ID | For CGA Number | Gas Fitting Size | For Use With | Each | CGA Number | Each | CGA Number | Each | |||
Brass | |||||||||||
1/8" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 00000 | 032 | 0000000 | 00000 | 033 | 0000000 | 00000 |
3/16" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 0000 | 032 | 0000000 | 0000 | 033 | 0000000 | 0000 |
1/4" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 0000 | 032 | 0000000 | 0000 | 033 | 0000000 | 0000 |
3/8" | 032, 033 | B | Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon | 0000000 | 0000 | 032 | 0000000 | 0000 | 033 | 0000000 | 0000 |
Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing

- For Use With: Argon, Helium, Nitrogen
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
- Compatible With: Swagelok® VCR
The 15 Ra finish on the interior of these fittings creates an ultra-smooth surface. Also known as ultra-high-purity fittings, they are packed in a Class 100 clean room to prevent contamination. They are commonly used in semiconductor applications. Fittings use a metal gasket (sold separately), which generates fewer particles than a rubber gasket and creates a strong seal in high-pressure and high-vacuum applications. Fittings are 316 stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.

For Tube OD | Pipe Size | Material | Max. Pressure | Max. Vacuum | Each | |
NPT Threads | ||||||
---|---|---|---|---|---|---|
1/2" | 1/2 | 316L Stainless Steel | 3,500 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 000000 |


Use a female nut to connect a threaded adapter or a Yor-Lok adapter with a butt-weld adapter.

For Tube OD | Gasket Material | Max. Vacuum | Each | |
1/2" | 316L Stainless Steel | 10 -11 torr @ 72° F | 0000000 | 00000 |