Metric Flared Fittings | McMaster-Carr

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54 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

45° Flared Fittings for Copper and Brass Tubing

Metric and UN/UNF
(SAE Straight) Male
Threads with Gasket

Temperature Range: -65° to 250° F
Tubing: Use with seamless brass and copper that meets ASTM B280

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.

Metric and UN/UNF (Straight) threads have a gasket to protect against leaks. Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.

Straight Adapters, Tube × Male Threaded Pipe

Metric and UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water; except adapters for 1/8" and 1" tube OD are not for use with fuel oil
Specifications Met: See table

For Tube									Each
OD	Wall Thick.	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure	Specifications Met		1-9	10-49	50-Up
Metric Threads
1/2"	0.032"	M16	1.5	Brass	Fluoroelastomer Rubber	750 psi @ 72° F	SAE J512, SAE J513, UL Listed	50635K903	000000	000000	000000
5/8"	0.035"	M27	2	Brass	Fluoroelastomer Rubber	650 psi @ 72° F	SAE J512, SAE J513, UL Listed	50635K904	00000	00000	00000
3/4"	0.035"	M27	2	Brass	Fluoroelastomer Rubber	550 psi @ 72° F	SAE J512, SAE J513, UL Listed	50635K905	00000	00000	00000

90° Elbow Adapters, Tube × Male Threaded Pipe

Metric and UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With:
Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water
Specifications Met: SAE J512, SAE J513, UL Listed

For Tube								Each
OD	Wall Thick.	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure		1-9	10-49	50-Up
Metric Threads
5/8"	0.035"	M27	2	Brass	Fluoroelastomer Rubber	650 psi @ 72° F	50635K926	000000	000000	000000

45° Elbow Adapters, Tube × Male Threaded Pipe

Metric and UN/UNF
(SAE Straight) Male
Threads with Gasket

For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water
Specifications Met: SAE J512, SAE J513, UL Listed

For Tube								Each
OD	Wall Thick.	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure		1-9	10-49	50-Up
Metric Threads
1/2"	0.032"	M16	1.5	Brass	Fluoroelastomer Rubber	750 psi @ 72° F	50635K946	000000	000000	000000
5/8"	0.035"	M27	2	Brass	Fluoroelastomer Rubber	650 psi @ 72° F	50635K947	00000	00000	00000

Nuts

(A) Short Nut

(B) Short Nut

For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water; except nuts for 1" tube OD are not for use with fuel oil
Specifications Met: SAE J512, SAE J513, UL Listed; except nuts for 1" tube OD meet SAE J512 and SAE J513 only

	For Tube						Each
	OD	Wall Thick.	Nut Material	Max. Pressure	Lg.		1-19	20-99	100-Up
Short Nuts
A	1/2"	0.032"	Brass	750 psi @ 72° F	1"	50635K652	00000	00000	00000
A	5/8"	0.035"	Brass	650 psi @ 72° F	1 1/16"	50635K653	0000	0000	0000
B	1/2"	0.032"	Brass	750 psi @ 72° F	27/32"	50635K663	0000	0000	0000
B	5/8"	0.035"	Brass	650 psi @ 72° F	31/32"	50635K664	0000	0000	0000

Sleeves for 37° Flared Fittings for Stainless Steel Tubing

For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
Temperature Range: -420° to 1,200° F
Tubing: Use with seamless or welded 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Specifications Met: ISO 8434, SAE J514

Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. Sleeves are 316 stainless steel for excellent corrosion resistance. They are also known as ferrules.

Inch × metric sleeve adapters convert the fitting from inch to metric.

For Tube OD
Inch	Metric, mm	Sleeve Material		Each
Inch × Metric
1/4"	6	316 Stainless Steel	50715K369	000000
5/16"	8	316 Stainless Steel	50715K371	00000
3/8"	10	316 Stainless Steel	50715K372	00000
1/2"	12	316 Stainless Steel	50715K373	00000

37° Flared Fittings for Steel Tubing

BSPP and Metric
Male Threads with
Gasket and Washer

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
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.

To prevent leaks, UN/UNF (SAE Straight) male threads have a gasket. Metric and BSPP male threads have either a gasket or a gasket and washer.

Straight Adapters, Male Tube × Male Threaded Pipe

BSPP and Metric
Male Threads with
Gasket and Washer

Temperature Range: See table

Metric Threads
For Tube OD	Thread Size	Thread Pitch, mm	Material	Gasket Material	Washer Material	Max. Pressure	Temp. Range, °F		Each
1/4"	M10	1	Zinc-Plated Steel	Buna-N Rubber	__	3,600 psi @ 72° F	-30° to 200°	4545K501	000000
1/4"	M10	1	Zinc-Plated Steel	Buna-N Rubber	Zinc-Plated Steel	4,500 psi @ 72° F	-20° to 212°	4545K216	0000
1/4"	M12	1.5	Zinc-Plated Steel	Buna-N Rubber	__	3,600 psi @ 72° F	-30° to 200°	4545K502	00000
1/4"	M12	1.5	Zinc-Plated Steel	Buna-N Rubber	Zinc-Plated Steel	4,500 psi @ 72° F	-20° to 212°	4545K217	00000
3/8"	M14	1.5	Zinc-Plated Steel	Buna-N Rubber	__	3,600 psi @ 72° F	-30° to 200°	4545K503	00000
3/8"	M14	1.5	Zinc-Plated Steel	Buna-N Rubber	Zinc-Plated Steel	4,500 psi @ 72° F	-20° to 212°	4545K219	00000
3/8"	M16	1.5	Zinc-Plated Steel	Buna-N Rubber	__	2,300 psi @ 72° F	-30° to 200°	4545K504	00000
1/2"	M16	1.5	Zinc-Plated Steel	Buna-N Rubber	__	2,300 psi @ 72° F	-30° to 200°	4545K505	00000
1/2"	M18	1.5	Zinc-Plated Steel	Buna-N Rubber	__	2,300 psi @ 72° F	-30° to 200°	4545K506	00000
1/2"	M18	1.5	Zinc-Plated Steel	Buna-N Rubber	Zinc-Plated Steel	4,500 psi @ 72° F	-20° to 212°	4545K223	00000
5/8"	M18	1.5	Zinc-Plated Steel	Buna-N Rubber	__	2,300 psi @ 72° F	-30° to 200°	4545K507	00000
5/8"	M20	1.5	Zinc-Plated Steel	Buna-N Rubber	__	2,300 psi @ 72° F	-30° to 200°	4545K508	00000
5/8"	M22	1.5	Zinc-Plated Steel	Buna-N Rubber	__	2,300 psi @ 72° F	-30° to 200°	4545K509	00000
3/4"	M22	1.5	Zinc-Plated Steel	Buna-N Rubber	__	2,300 psi @ 72° F	-30° to 200°	4545K325	00000

90° Elbow Adapters, Male Tube × Male Threaded Pipe

Temperature Range: NPT: -65° to 400° F
NPTF and BSPT: -60° to 400° F
Metric and BSPP with O-Rings: -30° to 200°F
BSPP with Washers: -20° to 212° F

Metric Threads
For Tube OD	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure		Each
1/4"	M10	1	Zinc-Plated Steel	Buna-N Rubber	3,600 psi @ 72° F	4545K513	000000
1/4"	M12	1.5	Zinc-Plated Steel	Buna-N Rubber	3,600 psi @ 72° F	4545K514	00000
3/8"	M16	1.5	Zinc-Plated Steel	Buna-N Rubber	2,300 psi @ 72° F	4545K515	00000
1/2"	M18	1.5	Zinc-Plated Steel	Buna-N Rubber	2,300 psi @ 72° F	4545K516	00000
5/8"	M18	1.5	Zinc-Plated Steel	Buna-N Rubber	2,300 psi @ 72° F	4545K517	00000

Sleeves

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.

Inch × metric sleeve adapters convert the fitting from inch to metric.

For Tube OD
Inch	Metric, mm	Sleeve Material	Max. Pressure		Each
Inch Sleeves
1/4"	__	Zinc-Plated Steel	4,500 psi @ 72° F	50695K216	00000
3/8"	__	Zinc-Plated Steel	4,000 psi @ 72° F	50695K218	000
1/2"	__	Zinc-Plated Steel	4,000 psi @ 72° F	50695K222	0000
5/8"	__	Zinc-Plated Steel	3,000 psi @ 72° F	50695K628	0000
3/4"	__	Zinc-Plated Steel	3,000 psi @ 72° F	50695K524	0000
Inch × Metric Sleeve Adapters
1/4"	6	Zinc-Plated Steel	4,500 psi @ 72° F	50695K111	000
3/8"	10	Zinc-Plated Steel	4,000 psi @ 72° F	50695K113	0000
1/2"	12	Zinc-Plated Steel	4,000 psi @ 72° F	50695K114	0000
5/8"	14	Zinc-Plated Steel	3,000 psi @ 72° F	50695K115	0000
5/8"	16	Zinc-Plated Steel	3,000 psi @ 72° F	50695K117	00000

Nuts

Temperature Range: -60° to 400° F

For Tube OD	Nut Material	Max. Pressure		Each
1/4"	Zinc-Plated Steel	4,500 psi @ 72° F	50695K224	00000
3/8"	Zinc-Plated Steel	4,000 psi @ 72° F	50695K226	0000
1/2"	Zinc-Plated Steel	4,000 psi @ 72° F	50695K228	0000
5/8"	Zinc-Plated Steel	3,000 psi @ 72° F	50695K636	0000
3/4"	Zinc-Plated Steel	3,000 psi @ 72° F	50695K532	0000

Sleeves for 37° Flared Fittings for Steel Tubing

For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
Temp. Range: -60° to 400° F
Tubing: Use with seamless steel
Specifications Met: SAE J514

Inch × metric sleeve adapters convert the fitting from inch to metric.

For Tube OD
Inch	Metric, mm	Sleeve Material	Max. Pressure		Each
Inch Sleeves
1/4"	__	Zinc-Plated Steel	4,500 psi @ 72° F	50695K216	00000
3/8"	__	Zinc-Plated Steel	4,000 psi @ 72° F	50695K218	000
1/2"	__	Zinc-Plated Steel	4,000 psi @ 72° F	50695K222	0000
5/8"	__	Zinc-Plated Steel	3,000 psi @ 72° F	50695K628	0000
3/4"	__	Zinc-Plated Steel	3,000 psi @ 72° F	50695K524	0000
Inch × Metric Sleeve Adapters
1/4"	6	Zinc-Plated Steel	4,500 psi @ 72° F	50695K111	000
5/16"	8	Zinc-Plated Steel	4,000 psi @ 72° F	50695K112	0000
3/8"	10	Zinc-Plated Steel	4,000 psi @ 72° F	50695K113	0000
1/2"	12	Zinc-Plated Steel	4,000 psi @ 72° F	50695K114	0000
5/8"	14	Zinc-Plated Steel	3,000 psi @ 72° F	50695K115	0000
5/8"	16	Zinc-Plated Steel	3,000 psi @ 72° F	50695K117	00000
7/8"	20	Zinc-Plated Steel	2,500 psi @ 72° F	50695K119	00000

Tight-Space 37° Flared Fittings for Steel Tubing

Temperature Range: -20° to 212° F
Tubing: Use with seamless steel
Specifications Met: SAE J514

The external hex bolt on these fittings allows for easy installation in cramped spaces. Fittings are also known as banjo-style fittings and JIC (Joint Industrial Council) fittings. They provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are zinc-plated steel, which has fair corrosion resistance.

90° Elbow Adapters with External Hex, Tube × Male Threaded Pipe

Metric Threads
For Tube OD	Thread Size	Thread Pitch, mm	Material	Washer Material	Max. Pressure		Each
1/4"	M10	1	Zinc-Plated Steel	Copper	3,500 psi @ 72° F	4545K312	000000
1/4"	M12	1.5	Zinc-Plated Steel	Copper	3,500 psi @ 72° F	4545K313	00000
3/8"	M14	1.5	Zinc-Plated Steel	Copper	3,000 psi @ 72° F	4545K314	00000
1/2"	M18	1.5	Zinc-Plated Steel	Copper	3,000 psi @ 72° F	4545K315	00000