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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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Nuts for 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
Use these nuts with a sleeve and fitting to provide a tight metal-to-metal seal on copper tubing that is flared to 37°. They are brass for good corrosion resistance.
For technical drawings and 3-D models, click on a part number.