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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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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. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Inline Tee Adapters, Tube × Male Threaded Pipe
Inline tees are also known as branch tees.
| For Tube OD | Pipe Size  | Max. Pressure | Specifications Met | Each | |
304 Stainless Steel | |||||
|---|---|---|---|---|---|
ANPT Threads | |||||
| 1/8" | 1/8 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, MS20825-2J, SAE AS9100D | 00000000 | 000000 |
| 1/4" | 1/8 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, MS20825-4J, SAE AS9100D | 00000000 | 00000 |
| 1/4" | 1/4 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, SAE AS9100D | 00000000 | 00000 |
| 3/8" | 1/4 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, MS20825-6J, SAE AS9100D | 00000000 | 00000 |
| 1/2" | 3/8 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, MS20825-8J, SAE AS9100D | 00000000 | 00000 |
| 1/2" | 1/2 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, SAE AS9100D | 00000000 | 000000 |
| 3/4" | 3/4 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, MS20825-12J, SAE AS9100D | 00000000 | 000000 |
| 1" | 1 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, MS20825-16J, SAE AS9100D | 00000000 | 000000 |
316 Stainless Steel | |||||
ANPT Threads | |||||
| 1/4" | 1/8 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, MS20825-4K, SAE AS9100D | 00000000 | 00000 |
| 1/4" | 1/4 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, SAE AS9100D | 00000000 | 00000 |
| 1/2" | 1/2 | 3,000 psi @ 72° F | ASTM A380, SAE AS4841, SAE AS9104/1, SAE AS9100D | 00000000 | 000000 |
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 |
| 3/4" | 3,000 psi @ 72° F | AN818-12J, ASTM A380, SAE AS4841 | 0000000 | 00000 |
| 1" | 3,000 psi @ 72° F | AN818-16J, ASTM A380, SAE AS4841 | 00000000 | 00000 |
316 Stainless Steel | ||||
| 1/4" | 3,000 psi @ 72° F | AN818-4K, ASTM A380, SAE AS4841 | 00000000 | 00000 |
| 1/2" | 3,000 psi @ 72° F | AN818-8K, ASTM A380, SAE AS4841 | 00000000 | 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 |
| 3/4" | 3,000 psi @ 72° F | AN819-12J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 0000000 | 00000 |
| 1" | 3,000 psi @ 72° F | AN819-16J, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 00000000 | 00000 |
316 Stainless Steel | ||||
| 1/4" | 3,000 psi @ 72° F | AN819-4K, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 00000000 | 0000 |
| 1/2" | 3,000 psi @ 72° F | AN819-8K, ASTM A380, MS20819, SAE AS4841, SAE AS5176 | 00000000 | 00000 |