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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.
Straight Adapters, Tube × Male Threaded Pipe
- For Use With: See table
- Temperature Range: See table
| For Tube OD | Pipe Size  | Thread Size | For Use With | Material | Gasket Material | Max. Pressure | Temp. Range, °F | Each | |
NPT Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/16" | 1/8 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 6,000 psi @ 72° F | -420° to 1200° | 000000000 | 000000 |
| 1/4" | 3/8 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 6,000 psi @ 72° F | -420° to 1200° | 000000000 | 00000 |
| 1/4" | 1/2 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 6,000 psi @ 72° F | -420° to 1200° | 000000000 | 00000 |
| 3/8" | 1/4 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 6,000 psi @ 72° F | -420° to 1200° | 000000000 | 00000 |
| 3/4" | 1/2 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 5,000 psi @ 72° F | -420° to 1200° | 000000000 | 00000 |
| 3/4" | 1 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 3,500 psi @ 72° F | -420° to 1200° | 000000000 | 000000 |
BSPP Threads | |||||||||
| 1/4" | 1/8 | __ | Air, Hydraulic Fluid, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 00000 |
| 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 |
UN/UNF (SAE Straight) Threads | |||||||||
| 3/16" | __ | 3/8"-24 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 1/4" | __ | 1/2"-20 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 5/16" | __ | 1/2"-20 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 3/8" | __ | 7/16"-20 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 3/8" | __ | 3/4"-16 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 1/2" | __ | 9/16"-18 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 1/2" | __ | 7/8"-14 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 1/2" | __ | 1 1/16"-12 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 6,000 psi @ 72° F | -30° to 250° | 000000000 | 00000 |
| 3/4" | __ | 1 3/16"-12 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 5,000 psi @ 72° F | -30° to 250° | 000000000 | 000000 |
Straight Adapters, Tube × Female Threaded Pipe
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: See table
| For Tube OD | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 3/8" | 1/4 | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 000000000 | 000000 |
Straight Reducers, Tube
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: See table
| For Tube OD (A) | For Tube OD (B) | Material | Max. Pressure | Temp. Range, °F | Each | |
| 3/8" | 1/4" | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 000000000 | 000000 |
90° Elbow Adapters, Tube × Male Threaded Pipe
- 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 | |
NPT Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8" | 1/4 | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | __ | 5,000 psi @ 72° F | -420° to 1200° | 000000000 | 000000 |
BSPP Threads | |||||||||
| 1/4" | 1/8 | Air, Water | 316 Stainless Steel | Fluoroelastomer Rubber | Stainless Steel | 6,000 psi @ 72° F | -15° to 400° | 0000000 | 00000 |
| 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 |
90° Elbow Adapters, Tube × Female Threaded Pipe
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
| For Tube OD | Pipe Size | Material | Max. Pressure | Each | |
NPT Threads | |||||
|---|---|---|---|---|---|
| 3/8" | 1/4 | 316 Stainless Steel | 5,000 psi @ 72° F | 000000000 | 000000 |
Nuts
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
Sleeves
- 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.
For Tube OD | ||||
|---|---|---|---|---|
| Inch | Metric, mm | Sleeve Material | Each | |
Inch | ||||
| 3/16" | __ | 316 Stainless Steel | 000000000 | 00000 |
| 1/4" | __ | 316 Stainless Steel | 000000000 | 0000 |
| 5/16" | __ | 316 Stainless Steel | 000000000 | 0000 |
| 3/8" | __ | 316 Stainless Steel | 000000000 | 0000 |
| 1/2" | __ | 316 Stainless Steel | 000000000 | 00000 |
| 3/4" | __ | 316 Stainless Steel | 000000000 | 00000 |
Inch × Metric | ||||
| 1/4" | 6 | 316 Stainless Steel | 000000000 | 00000 |
| 5/16" | 8 | 316 Stainless Steel | 000000000 | 00000 |
| 3/8" | 10 | 316 Stainless Steel | 000000000 | 00000 |
| 1/2" | 12 | 316 Stainless Steel | 000000000 | 00000 |
Precision AN 37° Flared Fittings for Stainless Steel Tubing
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
- Temperature Range: -320° to 1200° F
- Tubing: Use with seamless 304 or 316 stainless steel
- Specifications Met: See Table
The threads on the tube end of these fittings are Class 3A or 3B and adhere to tighter tolerances than other 37° flared fittings. They are made to exact AS (formerly AN) specifications and provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
304 stainless steel fittings have very good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Straight Reducers, Tube
| For Tube OD (A) | For Tube OD (B) | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | |||||
|---|---|---|---|---|---|
| 1/4" | 1/8" | 3,000 psi @ 72° F | AN919-1J, ASTM A380, SAE AS4841 | 0000000 | 000000 |
| 3/8" | 1/4" | 3,000 psi @ 72° F | AN919-6J, ASTM A380, SAE AS4841 | 0000000 | 00000 |
| 1/2" | 1/4" | 3,000 psi @ 72° F | AN919-10J, ASTM A380, SAE AS4841 | 0000000 | 00000 |
| 1/2" | 3/8" | 3,000 psi @ 72° F | AN919-12J, ASTM A380, SAE AS4841 | 0000000 | 00000 |
Nuts
| For Tube OD | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | ||||
|---|---|---|---|---|
| 1/8" | 3,000 psi @ 72° F | AN818-2J, ASTM A380, SAE AS4841 | 0000000 | 00000 |
| 1/4" | 3,000 psi @ 72° F | AN818-4J, ASTM A380, SAE AS4841 | 0000000 | 0000 |
| 3/8" | 3,000 psi @ 72° F | AN818-6J, ASTM A380, SAE AS4841 | 0000000 | 0000 |
| 1/2" | 3,000 psi @ 72° F | AN818-8J, ASTM A380, SAE AS4841 | 0000000 | 00000 |
Sleeves
| For Tube OD | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | ||||
|---|---|---|---|---|
| 1/8" | 3,000 psi @ 72° F | AN819-2J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 00000 |
| 1/4" | 3,000 psi @ 72° F | AN819-4J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 0000 |
| 3/8" | 3,000 psi @ 72° F | AN819-6J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 0000 |
| 1/2" | 3,000 psi @ 72° F | AN819-8J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 0000 |
Sleeves for Precision AN 37° Flared Fittings for Stainless Steel Tubing
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
- Temperature Range: -320° to 1200° F
- Tubing: Use with seamless 304 or 316 stainless steel
- Specifications Met: See Table
Use these sleeves with precision AN nuts and fittings to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. They are also known as ferrules.
304 stainless steel sleeves have very good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | ||||
|---|---|---|---|---|
| 1/8" | 3,000 psi @ 72° F | AN819-2J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 00000 |
| 1/4" | 3,000 psi @ 72° F | AN819-4J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 0000 |
| 3/8" | 3,000 psi @ 72° F | AN819-6J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 0000 |
| 1/2" | 3,000 psi @ 72° F | AN819-8J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 0000 |
Nuts for Precision AN 37° Flared Fittings for Stainless Steel Tubing
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
- Temperature Range: -320° to 1200° F
- Tubing: Use with seamless 304 or 316 stainless steel
- Specifications Met: See Table
Use these nuts with precision AN sleeves and fittings to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. The threads are Class 3B and adhere to tighter tolerances than other nuts. They are made to exact AS (formerly AN) specifications.
304 stainless steel nuts have very good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | ||||
|---|---|---|---|---|
| 1/8" | 3,000 psi @ 72° F | AN818-2J, ASTM A380, SAE AS4841 | 0000000 | 00000 |
| 1/4" | 3,000 psi @ 72° F | AN818-4J, ASTM A380, SAE AS4841 | 0000000 | 0000 |
| 3/8" | 3,000 psi @ 72° F | AN818-6J, ASTM A380, SAE AS4841 | 0000000 | 0000 |
| 1/2" | 3,000 psi @ 72° F | AN818-8J, ASTM A380, SAE AS4841 | 0000000 | 00000 |