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37° Flared Fittings for Steel Tubing
Male Threads with
Gasket and Washer
Male Threads
with Gasket
- 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.
For technical drawings and 3-D models, click on a part number.
Male Threads with
Gasket and Washer
Male Threads
with Gasket
- Temperature Range: See table
| For Tube OD | Pipe Size  | Thread Size | Thread Pitch, mm | Material | Gasket Material | Washer Material | Max. Pressure | Temp. Range, °F | Each | |
Metric Threads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/4" | __ | M10 | 1 | Zinc-Plated Steel | Buna-N Rubber | __ | 3,600 psi @ 72° F | -30° to 200° | 00000000 | 000000 |
| 1/4" | __ | M10 | 1 | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 1/4" | __ | M12 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 3,600 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/4" | __ | M12 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 00000 |
| 3/8" | __ | M14 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 3,600 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/8" | __ | M14 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 00000 |
| 3/8" | __ | M16 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/2" | __ | M16 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/2" | __ | M18 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/2" | __ | M18 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 00000 |
| 5/8" | __ | M18 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 5/8" | __ | M20 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 5/8" | __ | M22 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/4" | __ | M22 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
BSPP Threads | ||||||||||
| 1/4" | 1/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/4" | 1/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 1/4" | 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 5,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/4" | 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 1/4" | 3/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/8" | 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 5,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/8" | 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 3/8" | 3/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/8" | 3/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 3/8" | 1/2 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/2" | 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 5,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/2" | 3/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/2" | 1/2 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1/2" | 1/2 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 00000 |
| 1/2" | 3/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 5/8" | 3/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 5/8" | 1/2 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/4" | 1/2 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/4" | 3/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 3/4" | 1 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 3,500 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1" | 3/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
| 1" | 1 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 2,500 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
BSPT Threads | ||||||||||
| 1/4" | 1/8 | __ | __ | Zinc-Plated Steel | __ | __ | 4,000 psi @ 72° F | -60° to 400° | 00000000 | 00000 |
| 1/4" | 1/8 | __ | __ | Zinc-Plated Steel | __ | __ | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 1/4" | 1/4 | __ | __ | Zinc-Plated Steel | __ | __ | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 3/8" | 1/4 | __ | __ | Zinc-Plated Steel | __ | __ | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 3/8" | 3/8 | __ | __ | Zinc-Plated Steel | __ | __ | 4,000 psi @ 72° F | -60° to 400° | 00000000 | 00000 |
| 3/8" | 3/8 | __ | __ | Zinc-Plated Steel | __ | __ | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 1/2" | 1/2 | __ | __ | Zinc-Plated Steel | __ | __ | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 0000 |
| 3/4" | 3/4 | __ | __ | Zinc-Plated Steel | __ | __ | 4,000 psi @ 72° F | -60° to 400° | 00000000 | 00000 |
| 1" | 1 | __ | __ | Zinc-Plated Steel | __ | __ | 3,500 psi @ 72° F | -60° to 400° | 00000000 | 00000 |
Male Threads with
Gasket and Washer
Male Threads
with Gasket
- 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
| For Tube OD | Pipe Size | Thread Size | Thread Pitch, mm | Material | Gasket Material | Washer Material | Max. Pressure | Each | |
Metric Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/4" | __ | M10 | 1 | Zinc-Plated Steel | Buna-N Rubber | __ | 3,600 psi @ 72° F | 00000000 | 000000 |
| 1/4" | __ | M12 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 3,600 psi @ 72° F | 00000000 | 00000 |
| 3/8" | __ | M16 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | 00000000 | 00000 |
| 1/2" | __ | M18 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | 00000000 | 00000 |
| 5/8" | __ | M18 | 1.5 | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | 00000000 | 00000 |
BSPP Threads | |||||||||
| 1/4" | 1/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 1/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 3/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 3/8 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 1/2 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | 00000000 | 00000 |
| 3/4" | 3/4 | __ | __ | Zinc-Plated Steel | Buna-N Rubber | __ | 4,000 psi @ 72° F | 00000000 | 00000 |
BSPT Threads | |||||||||
| 1/4" | 1/4 | __ | __ | Zinc-Plated Steel | __ | __ | 5,000 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 1/4 | __ | __ | Zinc-Plated Steel | __ | __ | 5,000 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 3/8 | __ | __ | Zinc-Plated Steel | __ | __ | 4,000 psi @ 72° F | 0000000 | 00000 |
- 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 | 000000000 | 00000 |
| 3/8" | __ | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 000 |
| 1/2" | __ | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | __ | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 3/4" | __ | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 1" | __ | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 0000 |
Inch × Metric Sleeve Adapters | |||||
| 1/4" | 6 | Zinc-Plated Steel | 4,500 psi @ 72° F | 000000000 | 0000 |
| 3/8" | 10 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 1/2" | 12 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | 14 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | 16 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
- Temperature Range: -60° to 400° F
| For Tube OD | Nut Material | Max. Pressure | Each | |
| 1/4" | Zinc-Plated Steel | 4,500 psi @ 72° F | 000000000 | 00000 |
| 3/8" | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 000 |
| 1/2" | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 3/4" | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 1" | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 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
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 technical drawings and 3-D models, click on a part number.
For Tube OD | |||||
|---|---|---|---|---|---|
| Inch | Metric, mm | Sleeve Material | Max. Pressure | Each | |
Inch Sleeves | |||||
| 1/4" | __ | Zinc-Plated Steel | 4,500 psi @ 72° F | 000000000 | 00000 |
| 3/8" | __ | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 000 |
| 1/2" | __ | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | __ | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 3/4" | __ | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 1" | __ | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 0000 |
Inch × Metric Sleeve Adapters | |||||
| 1/4" | 6 | Zinc-Plated Steel | 4,500 psi @ 72° F | 000000000 | 0000 |
| 5/16" | 8 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 3/8" | 10 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 1/2" | 12 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | 14 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | 16 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 7/8" | 20 | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 0000 |
37° Flared Fittings for Copper Tubing
- For Use With: Air, Fuel Oil, Mineral Oil, Water
- Temperature Range: -40° to 400° F
- Tubing: Use with seamless copper
- Specifications Met: ISO 8434, MIL-F-18866, 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 can handle higher pressures than 45° flared fittings. Fittings are brass for good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
For technical drawings and 3-D models, click on a part number.
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 technical drawings and 3-D models, click on a part number.
37° Flared Fittings for Stainless Steel Tubing
- Tubing: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
- Specifications Met: ISO 8434, SAE J514, except fittings with BSPP and BSPT threads meet SAE J514 only
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They withstand high pressure, so they’re often used in hydraulic applications. Made from 316 stainless steel, they resist corrosion from water and chemicals. A complete fitting requires a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
BSPP threads and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: See table
- Temperature Range: See table
| For Tube OD | Pipe Size | For Use With | Material | Gasket Material | Max. Pressure | Temp. Range, °F | Each | |
BSPP Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 1/8 | Air, Hydraulic Fluid, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 000000 |
| 1/4" | 1/4 | Air, Hydraulic Fluid, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 00000 |
| 3/8" | 1/4 | Air, Hydraulic Fluid, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 00000 |
| 3/8" | 3/8 | Air, Hydraulic Fluid, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 00000 |
BSPT Threads | ||||||||
| 1/4" | 1/8 | Air, Hydraulic Fluid, Natural Gas, Water | 316 Stainless Steel | __ | 8,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
| 1/4" | 1/4 | Air, Hydraulic Fluid, Natural Gas, Water | 316 Stainless Steel | __ | 8,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
| 3/8" | 1/4 | Air, Hydraulic Fluid, Natural Gas, Water | 316 Stainless Steel | __ | 7,500 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
| 3/8" | 3/8 | Air, Hydraulic Fluid, Natural Gas, Water | 316 Stainless Steel | __ | 7,500 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
- For Use With: See table
- Temperature Range: See table
| For Tube OD | Pipe Size | For Use With | Material | Gasket Material | Washer Material | Max. Pressure | Temp. Range, °F | Each | |
BSPP Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/4" | 1/8 | Air, Water | 316 Stainless Steel | Fluoroelastomer Rubber | Stainless Steel | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 000000 |
| 1/4" | 1/4 | Air, Water | 316 Stainless Steel | Fluoroelastomer Rubber | Stainless Steel | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 00000 |
| 3/8" | 1/4 | Air, Water | 316 Stainless Steel | Fluoroelastomer Rubber | Stainless Steel | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 000000 |
| 3/8" | 3/8 | Air, Water | 316 Stainless Steel | Fluoroelastomer Rubber | Stainless Steel | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 000000 |
BSPT Threads | |||||||||
| 1/4" | 1/4 | Air, Hydraulic Fluid, Natural Gas, Water | 316 Stainless Steel | __ | __ | 8,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
| 3/8" | 1/4 | Air, Hydraulic Fluid, Natural Gas, Water | 316 Stainless Steel | __ | __ | 7,500 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
| 3/8" | 3/8 | Air, Hydraulic Fluid, Natural Gas, Water | 316 Stainless Steel | __ | __ | 7,500 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
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.