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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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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.
Through-Wall Straight Connectors, Tube
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
| For Tube OD | Max. Pressure | Specifications Met | For Hole Dia. | For Max. Wall Thick. | Each | |
304 Stainless Steel  | ||||||
|---|---|---|---|---|---|---|
| 1/2" | 3,000 psi @ 72° F | AN832-8J, ASTM A380, SAE AS4841 | 3/4" | 1/8" | 00000000 | 000000 |
Nuts
| For Tube OD | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | ||||
|---|---|---|---|---|
| 1/2" | 3,000 psi @ 72° F | AN818-8J, ASTM A380, SAE AS4841 | 0000000 | 000000 |
Sleeves
| For Tube OD | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | ||||
|---|---|---|---|---|
| 1/2" | 3,000 psi @ 72° F | AN819-8J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 00000 |