How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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37° Flared Fittings for Steel Tubing
- 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.
- Temperature Range: -60° to 400° F
| For Tube OD | Material | Max. Pressure | Each | |
| 1/4" | Zinc-Plated Steel | 5,000 psi @ 72° F | 000000000 | 00000 |
| 5/16" | Zinc-Plated Steel | 5,000 psi @ 72° F | 000000000 | 00000 |
| 3/8" | Zinc-Plated Steel | 5,000 psi @ 72° F | 000000000 | 0000 |
| 1/2" | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | Zinc-Plated Steel | 3,800 psi @ 72° F | 000000000 | 00000 |
| 3/4" | Zinc-Plated Steel | 3,300 psi @ 72° F | 000000000 | 00000 |
| 1" | Zinc-Plated Steel | 3,500 psi @ 72° F | 000000000 | 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 |
| 5/16" | __ | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 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 |
- 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 |
| 5/16" | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 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 |
37° Flared Fittings for Aluminum Tubing
- For Use With: Air, Coolant, Gasoline, Hydraulic Fluid, Water
- Temperature Range: -60° to 400° F
- Tubing: Use with seamless aluminum
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are aluminum, which is lightweight with good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
| For Tube OD | Material | Max. Pressure | Each | |
| 1/4" | Anodized 2014 Aluminum | 3,000 psi @ 72° F | 0000000 | 000000 |
| 3/8" | Anodized 2014 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
| 1/2" | Anodized 2014 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
| 5/8" | Anodized 2014 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
| 3/4" | Anodized 2014 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
| For Tube OD | Nut Material | Max. Pressure | Each | |
| 1/4" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
| 3/8" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
| 1/2" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
| 5/8" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
| 3/4" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
| For Tube OD | Sleeve Material | Max. Pressure | Each | |
| 1/4" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
| 3/8" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
| 1/2" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
| 5/8" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
| 3/4" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |