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About Metal Tubing
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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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Smooth-Bore Seamless Steel Tubing
Seamless construction with no weld bead gives this tubing a smooth interior for unrestricted flow. It is stronger than welded tubing and can be flared without splitting. Do not use in corrosive environments.
For technical drawings and 3-D models, click on a part number.
Straights
- Temperature Range: See Table
- Bending Method: Tube Bender
- For Use With: Hydraulic Fluid, Natural Gas
- Compatible Tubing Fittings: Compression and Flared
| OD | Wall Thick. | ID | Max. Pressure | Temperature Range, °F | Temper Rating | Specifications Met | 3 ft. | 6 ft. | |
Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/16" | 0.035" | 0.118" | 3,600 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1/4" | 0.035" | 0.18" | 2,700 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1/4" | 0.049" | 0.152" | 3,800 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1/4" | 0.065" | 0.12" | 5,100 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 5/16" | 0.035" | 0.243" | Not Rated | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 3/8" | 0.035" | 0.305" | 1,800 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 3/8" | 0.049" | 0.277" | 2,500 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 3/8" | 0.065" | 0.245" | 3,400 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1/2" | 0.035" | 0.43" | 1,300 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1/2" | 0.049" | 0.402" | 1,900 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1/2" | 0.065" | 0.37" | 2,500 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1/2" | 0.083" | 0.334" | 3,200 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 5/8" | 0.035" | 0.555" | 1,100 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 5/8" | 0.049" | 0.527" | 1,600 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 5/8" | 0.065" | 0.495" | Not Rated | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 5/8" | 0.083" | 0.459" | Not Rated | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 3/4" | 0.049" | 0.652" | 1,300 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 3/4" | 0.065" | 0.62" | 1,800 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 3/4" | 0.083" | 0.584" | 2,300 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 3/4" | 0.095" | 0.56" | Not Rated | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1" | 0.049" | 0.902" | 1,000 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1" | 0.065" | 0.87" | 1,300 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1" | 0.083" | 0.834" | 1,700 psi @ 72° F | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1" | 0.095" | 0.81" | Not Rated | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
| 1 1/4" | 0.12" | 1.01" | Not Rated | -65° to 800° | Soft | ASTM A179, SAE J524 | 00000000 | ||
Corrosion-Resistant Steel Tubing
- Temperature Range: -20° to 800° F
- Bending Method: Tube Bender
- Compatible Tube Fittings: Compression and Flared
A thin layer of zinc yellow-chromate gives this tubing extra corrosion resistance, making it an economical alternative to stainless steel. Tubing is seamless, which provides a smooth interior for unrestricted flow. It is stronger than welded tubing and can be flared without splitting.
For technical drawings and 3-D models, click on a part number.
| OD | Wall Thick. | ID | Max. Pressure | Temper Rating | 1 ft. | 3 ft. | 6 ft. | |
For Use With Hydraulic Fluid, Oil, Salt Water, Water | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/16" | 0.035" | 0.118" | 3,600 psi @ 72° F | Soft | 0000000 | |||
| 1/4" | 0.035" | 0.18" | 2,700 psi @ 72° F | Soft | 0000000 | |||
| 5/16" | 0.035" | 0.243" | 2,200 psi @ 72° F | Soft | 0000000 | |||
| 3/8" | 0.035" | 0.305" | 1,800 psi @ 72° F | Soft | 0000000 | |||
| 3/8" | 0.049" | 0.277" | 2,500 psi @ 72° F | Soft | 0000000 | |||
| 3/8" | 0.065" | 0.245" | 3,400 psi @ 72° F | Soft | 0000000 | |||
| 1/2" | 0.035" | 0.43" | 1,300 psi @ 72° F | Soft | 0000000 | |||
| 1/2" | 0.049" | 0.402" | 1,900 psi @ 72° F | Soft | 0000000 | |||
| 1/2" | 0.065" | 0.37" | 2,500 psi @ 72° F | Soft | 0000000 | |||
| 5/8" | 0.065" | 0.495" | 2,000 psi @ 72° F | Soft | 0000000 | |||
| 3/4" | 0.083" | 0.584" | 2,300 psi @ 72° F | Soft | 0000000 | |||
| 1" | 0.095" | 0.81" | 1,900 psi @ 72° F | Soft | 0000000 | |||
Yor-Lok Fittings for Steel Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil
- Tubing: Use with seamless steel
- Specifications Met: See table
A nut with two sleeves (ferrules) gives these fittings extra gripping power. The sleeves bite into tubing as you tighten the nut, creating a strong seal. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. Fittings are zinc-plated steel for fair corrosion resistance. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
For technical drawings and 3-D models, click on a part number.
90° Elbow Adapters, Tube × Male Threaded Pipe
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size  | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/8" | 0.035" | 1/8 | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 000000 |
| 1/8" | 0.035" | 1/4 | Zinc-Plated Steel | 6,500 psi @ 72° F | -20° to 395° | ASTM A179 | 0000000 | 00000 |
| 3/16" | 0.035" | 1/8 | Zinc-Plated Steel | 6,700 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 1/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 3/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/4" | 0.035" | 1/2 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 5/16" | 0.035" | 1/8 | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 5/16" | 0.035" | 1/4 | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 1/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 3/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/8" | 0.035" | 1/2 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 1/4 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 3/8 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1/2" | 0.035" | 3/4 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 5/8" | 0.035" | 1/2 | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/4" | 0.049" | 1/2 | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 3/4" | 0.049" | 3/4 | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 00000 |
| 1" | 0.065" | 1 | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 0000000 | 000000 |
90° Elbow Connectors, Tube
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1" | 0.065" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
Inline Tee Adapters, Tube × Male Threaded Pipe
Inline tees are also known as branch tees.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/4" | 0.035" | 1/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 3/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 3/8 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 5/8" | 0.035" | 1/2 | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
Inline Tee Adapters, Tube × Female Threaded Pipe
Inline tees are also known as branch tees.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 1/4 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/2" | 0.035" | 3/8 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/4" | 0.049" | 3/4 | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
Right-Angle Tee Adapters, Tube × Male Threaded Pipe
Right-angle tees are also known as run tees.
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
NPT Threads | ||||||||
| 1/4" | 0.035" | 1/8 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | 3/8 | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 000000 |
| 1/2" | 0.035" | 1/2 | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A179 | 00000000 | 00000 |
Tee Connectors, Tube
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 5/16" | 0.035" | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 00000 |
| 1" | 0.065" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A179 | 00000000 | 000000 |
Nuts
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 6,800 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 00000 |
| 3/16" | 0.035" | Zinc-Plated Steel | 6,700 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 4,900 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 5/16" | 0.035" | Zinc-Plated Steel | 3,800 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 3,100 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 1,800 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 2,200 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 0000 |
| 1" | 0.065" | Zinc-Plated Steel | 2,100 psi @ 72° F | -20° to 395° | ASTM A108 | 00000000 | 00000 |
Front and Back Sleeves
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Front Sleeve Material | Back Sleeve Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
| 1/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 6,800 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 3/16" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 6,700 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
| 1/4" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 4,850 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 0000 |
| 5/16" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 3,800 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 3/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 3,100 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 1/2" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 2,300 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 5/8" | 0.035" | Zinc-Plated Steel | 316 Stainless Steel | 1,800 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 3/4" | 0.049" | Zinc-Plated Steel | 316 Stainless Steel | 2,150 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |
| 1" | 0.065" | Zinc-Plated Steel | 316 Stainless Steel | 2,100 psi @ 72° F | -20° to 800° | ASME B31.3 | 00000000 | 00000 |