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Flare Fittings

You won't find a better selection of flare fittings anywhere on the Internet. It is important to use flare fittings when you are dealing with a lot of water pressure going through a pipe or are dealing with high gas distribution. Flare fittings on the end of copper tubing should provide a strong connection to a fixed point with a threaded nipple. PlumbingSupply.com® is your source for hard-to-find fittings. And, as always, there is never a minimum purchase requirement.
Looking for specialty 3/16" or 7/16" sized flare nuts?
ALL flare fittings sizes on this page are O.D. (outside diameter of pipe).
Please note: Not all fitting styles available in all sizes. Brass fittings on this page are NOT for use with potable water.

Prop 65 warning
California Proposition 65 Warning
WARNING: These products contain lead, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, click here.
(California law requires this warning to be given to customers in the State of California.)

Items with lead are NOT for use in potable water systems and are only for industrial non-drinking water applications

Caps

Flare Fitting Cap
Shown: 1/2" Cap
Size Price & Quantity
1/4" $1.14
5/16" $4.09
3/8" $1.54
1/2" $1.75
Size Price & Quantity
5/8" $3.98
3/4" $10.95
15/16" (steel) $10.44
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Female Swivel Nut

Flare Fitting Swivel Nut
Shown: 1/2" x 1/2" Female Swivel Nut
Size Price & Quantity
1/4" x 1/4" $4.72
5/16" x 5/16" $7.40
3/8 x 1/4" $10.94
3/8" x 3/8" $5.51
1/2" x 3/8" $11.00
Size Price & Quantity
1/2" x 1/2" $6.56
5/8" x 1/2" $14.04
5/8" x 5/8" $8.18
3/4" x 3/4" $23.51
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Flare Nut

Flare Fitting Nut
Shown: 1/2" Flare Nut
Size Price & Quantity
3/16" $1.06
1/4" $1.07
5/16" $2.91
3/8" $1.55
1/2" $2.01
Size Price & Quantity
5/8" $5.30
7/16" $5.83
3/4" $6.79
7/8" $13.39
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Male 90° Elbow (MIPS)

Flare Fitting Male 90° Elbow
Shown: 1/2" x 1/2" MIPS 90° Elbow
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Female 90° Elbow (FIPS)

Flare Fitting Female 90° Elbow
Shown: 1/2" x 1/2" FIPS 90° Elbow
Size Price & Quantity
3/8" x 3/8" FIPS $3.63
3/8" x 1/2" FIPS $7.24
3/8" x 3/4" FIPS $6.93
1/2" x 3/8" FIPS $5.54
Size Price & Quantity
1/2" x 1/2" FIPS $5.54
1/2" x 3/4" FIPS $7.67
5/8" x 1/2" FIPS $6.56
5/8" x 3/4" FIPS $9.26
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90° Flare Elbow

Flare Fitting 90° Flare Elbow
Shown: 1/2" 90° Flare Elbow
Size Price & Quantity
5/16" $4.17
3/8" $3.76
Size Price & Quantity
1/2" $4.68
5/8" $6.89
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Flare Tee

Flare Tee
Shown: 1/2" Flare Tee
Size Price & Quantity
1/4" $3.89
1/4" x 1/4" x 1/4" MIPS $5.81
5/16" $4.47
3/8" $5.44
Size Price & Quantity
1/2" x 1/2" x 3/8" $7.57
1/2" $5.43
5/8" $10.94
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Flare Cross

Flare Cross
Shown: 1/2" Flare Cross
Size Price & Quantity
1/4" $8.43
5/16" $8.21
Size Price & Quantity
3/8" $7.88
1/2" $9.29
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Union

Union
Shown: 1/2" Flare Union
Size Price & Quantity
1/4" $1.56
5/16" x 1/4" $4.25
5/16" $3.16
3/8" x 1/4" $2.92
3/8" x 5/16" $5.73
3/8" $2.42
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Size Price & Quantity
1/2" x 3/8" $3.25
1/2" $3.15
5/8" x 3/8" $7.16
5/8" x 1/2" $5.01
5/8" $5.09
7/8" $18.95
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Plug

Plug
Shown: 1/2" Flare Plug
Size Price & Quantity
1/4" $2.10
3/8" $2.17
Size Price & Quantity
1/2" $2.74
5/8" $3.62
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Bonnet

Bonnet
Shown: 1/4" Bonnet
Size Price & Quantity
1/4" $1.13
5/16" $2.05
Size Price & Quantity
3/8" $1.36
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Female Adapter (FIPS)

Female Adapter
Shown: 1/2" x 1/2" FIPS Adapter
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Male Adapter (MIPS)

Male Adapter
Shown: 1/2" x 1/2" MIPS Adapter
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Female Flare x Male (MIPS) Adapter

Female Flare x MIPS
Shown: 1/2" Female Flare x 3/8" MIPS Adapter
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Female Flare x Male Flare

Female Flare x Male Flare
Shown: 1/2" Female Flare x 3/8" Male Flare Adapter
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Angled Needle Valve

Angled Needle Valve
Shown: 1/4" Flare x 1/8" MIPS Angled Needle Valve
Size Price & Quantity
1/4" Flare x 1/8" MIPS $11.02
5/16" Flare x 1/8" MIPS $30.29
Size Price & Quantity
5/16" Flare x 1/4" MIPS $14.88
3/8" Flare x 1/4" MIPS $50.76
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Straight Needle Valve

Straight Needle Valve
Shown: 1/4" Flare x 1/4" MIPS Straight Needle Valve
Size Price & Quantity
1/4" Flare x 1/8" MIPS $12.42
1/4" Flare x 1/4" MIPS $17.93
1/4" Flare x 1/4" Flare $9.07
Size Price & Quantity
3/8" Flare x 1/4" MIPS $19.99
3/8" Flare x 3/8" Flare $15.58
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Shop Flare Fittings by Size

1/4" Flare Fittings

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Budget Flaring Tool - Flares 3/16" to 5/8" Copper Tubing = $16.59
Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.77 or (1/2" x 520" roll) - $0.98
EXTRA THICK 4 MIL YELLOW Gas Line PTFE Tape (1/2" x 260" roll) - $1.36
Great White Basic Pipe Joint Compound (1 oz.) - $3.04
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.76
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.
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5/16" Flare Fittings

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Budget Flaring Tool - Flares 3/16" to 5/8" Copper Tubing = $16.59
Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.77 or (1/2" x 520" roll) - $0.98
EXTRA THICK 4 MIL YELLOW Gas Line PTFE Tape (1/2" x 260" roll) - $1.36
Great White Basic Pipe Joint Compound (1 oz.) - $3.04
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.76
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.
- OR - View Cart

3/8" Flare Fittings

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Budget Flaring Tool - Flares 3/16" to 5/8" Copper Tubing = $16.59
Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.77 or (1/2" x 520" roll) - $0.98
EXTRA THICK 4 MIL YELLOW Gas Line PTFE Tape (1/2" x 260" roll) - $1.36
Great White Basic Pipe Joint Compound (1 oz.) - $3.04
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.76
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.
- OR - View Cart

1/2" Flare Fittings

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Budget Flaring Tool - Flares 3/16" to 5/8" Copper Tubing = $16.59
Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.77 or (1/2" x 520" roll) - $0.98
EXTRA THICK 4 MIL YELLOW Gas Line PTFE Tape (1/2" x 260" roll) - $1.36
Great White Basic Pipe Joint Compound (1 oz.) - $3.04
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.76
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.
- OR - View Cart

5/8" Flare Fittings

- OR - View Cart
- OR - View Cart
Budget Flaring Tool - Flares 3/16" to 5/8" Copper Tubing = $16.59
Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.77 or (1/2" x 520" roll) - $0.98
EXTRA THICK 4 MIL YELLOW Gas Line PTFE Tape (1/2" x 260" roll) - $1.36
Great White Basic Pipe Joint Compound (1 oz.) - $3.04
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.76
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.
- OR - View Cart

3/4" Flare Fittings

Description Price & Quantity
3/4" Cap $10.95
3/4" x 3/4" Female Swivel Nut $23.51
3/4" Flare Nut $6.79
Description Price & Quantity
3/4" x 1/2" MIPS Adapter $8.70
3/4" x 3/4" MIPS Adapter $6.28
Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.77 or (1/2" x 520" roll) - $0.98
EXTRA THICK 4 MIL YELLOW Gas Line PTFE Tape (1/2" x 260" roll) - $1.36
Great White Basic Pipe Joint Compound (1 oz.) - $3.04
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.76
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.
- OR - View Cart

7/8" Flare Fittings

Description Price & Quantity
7/8" Flare Nut $13.39
7/8" Flare Union $18.95
Description Price & Quantity
7/8" x 3/4" MIPS Adapter $23.41
Need to seal your pipe threads? We've got you covered.
PTFE Tape (1/2" x 260" roll) - $0.77 or (1/2" x 520" roll) - $0.98
EXTRA THICK 4 MIL YELLOW Gas Line PTFE Tape (1/2" x 260" roll) - $1.36
Great White Basic Pipe Joint Compound (1 oz.) - $3.04
High Quality TU-555 Pipe Joint Compound (4 oz.) - $7.76
To ensure our customers receive fresh products, TU-555 pipe joint compounds are non-returnable.
- OR - View Cart

Special Size Flare Nuts

Description Price & Quantity
3/16" Flare Nut $1.06
7/16" Flare Nut $5.83
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Flare Fittings Related Items

Common Terms (and what they mean)
  • Flare: Compression fitting used with metal tubing, typically soft copper
  • O.D. Outside diameter of pipe
  • MIPS: Male pipe threads on the outside of fitting
  • FIPS: Female pipe threads on the inside of fitting
Tube O.D. 1/8" 3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4"
Thread Size 5/16-24 3/8-24 7/16-20 1/2-20 5/8-18 11/16-16 3/4-16 7/8-14 1-1/16-14
Frequently Asked Questions

Q. "Where do you use compression versus flare fittings?"
A. We prefer flare with soft tubing over 3/8"od in size and compression fittings on all hard copper and soft tubing 3/8"od and smaller. Don't use compression fittings on gas connections at all as most codes do not allow it nor do we recommend it.

Q. "Are these flare fittings suitable for natural gas connections?"
A. Brass and copper pipe or tubing must not be used where the gas contains more than an average of 0.3 grams of hydrogen sulfide per 100 scf (standard cubic feet) of gas (0.7 mg/100) according to section 1208.5.2.3 of the 2012 Uniform Plumbing Code and section 54.5.6.2.3 of the NFPA (National Fire Protection Association) fuel gas code. Since natural gas can contain some hydrogen sulfide, these brass flare fittings are not recommended. Galvanized and black steel pipe and fittings can be used if it is standard weight Schedule 40 or thicker.

Q. "Can you provide me with a quote on other brass fittings besides the ones listed above?"
A. Sorry but what we show is what we carry/offer/stock. We do not quote prices on flare fittings that we do not stock.

Q. "Should I use PTFE thread sealing tape or pipe joint compound on my flare threads?"
A. No, you definitely should not. PTFE tape and pipe joint compound (also known as "pipe dope") should only be used on "IPS" ("iron pipe size") threads, which are normal pipe threads. IPS threads make their seal along the threads themselves; when a piece of IPS-threaded pipe is screwed into a fitting, PTFE tape and/or pipe dope is used to assist that seal on the threads. Flare fittings, on the other hand, seal on the beveled ends of the fittings, and so using pipe dope or tape on flare threads could actually prevent the fittings from making an adequate seal.

Q. "Since these are brass fittings do they contain lead?"
A. Most of these fittings do contain a very small amount of lead. Consider that for many years copper fittings and pipe were soldered together with 50% lead and now little lead may be used by law. Same with these brass fittings. There is a small amount of lead in them. The more acidic the water, the more tends to leach out. Should you be concerned? Some would argue that any amount is bad, and they would not use it for potable water. Others argue that plastics will be the new "asbestos" of the future. We don't know, and we cannot recommend these fittings for potable water; but we can say that we ourselves drink our own water from and through these fittings.

Q. "What is the flare degree of the flare fittings you offer?"
A. The fittings we offer are SAE 45° flare with the exception of the 15/16"-16 flare cap found on our Gas-related Products page. The 15/16"-16 are 45° flare, but are not SAE fittings.

Q. "Why do you only offer a 15/16" flare cap and no other 15/16" flare fittings?"
A. The 15/16" - 16 thread flare fitting is used strictly for natural and propane flexible gas connectors and not for water or with fittings used in automobiles. Up until the 1980's, 5/8" O.D. SAE (Society of Automotive Engineer) standardized flare fittings were used for natural gas and propane flexible gas connections. 5/8" O.D. SAE Flare fittings were too close in size to 1/2" iron pipe size (IPS) fittings and pipe nipples. Because of this, 1/2" IPS couplings were often being used to connect to 5/8" O.D. SAE Flare fittings and IPS nipples into flexible gas connectors which then would not properly seal causing a small gas leak.

To alleviate this type of safety issue, the American gas industry implemented the 15/16" threaded flare fitting with fine threads (16 threads per inch) to be used on 5/8" O.D. (outside diameter) tubing. The flare fittings we offer are SAE 45° flare with the exception of the 15/16"-16 gas flare fittings. The 15/16"-16 are 45° flare, but are not SAE fittings".

Q. "How can I measure my flare fitting to know if it is 15/16"-16 flare or another size?"
A. The 15/16"-16 male flare thread measures 15/16" diameter from the outside of the male threads. The flare threads have 16 threads per inch. The actual opening through the fitting is 1/2" inside diameter for the gas to flow through. Gas appliance connectors larger than 1/2" O.D. use special flare fittings designed for gas use only.

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