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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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Nuts for 37° Flared Fittings for Aluminum Tubing

- For Use With: Air, Coolant, Gasoline, Hydraulic Fluid, Water
- Temperature Range: -60° to 350° F
- Tubing: Use with seamless aluminum
Use these nuts with a sleeve and fitting to provide a tight metal-to-metal seal on aluminum tubing that is flared to 37°. Nuts are aluminum, which is lightweight with good corrosion resistance.
For Tube OD | Nut Material | Max. Pressure | Each | |
3/16" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
1/4" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 0000 |
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 |
1" | Anodized 2024 Aluminum | 1,500 psi @ 72° F | 0000000 | 00000 |
1 1/4" | Anodized 2024 Aluminum | 1,500 psi @ 72° F | 0000000 | 00000 |