How to Measure Threaded Pipe Size
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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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Medium-Pressure Aluminum Threaded Pipe Fittings
Designed for medium-pressure applications, these fittings have better strength than our low-pressure aluminum pipe fittings. They are lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Oil, Water
- Specifications Met: ASME B1.20.1, ASTM B241
Pipe Size | Max. Pressure | Each | |
NPT Female × BSPT Male | |||
|---|---|---|---|
| 1/8 | 150 psi @ 72° F | 0000000 | 000000 |
| 1/4 | 150 psi @ 72° F | 0000000 | 00000 |
| 3/8 | 150 psi @ 72° F | 0000000 | 00000 |
| 1/2 | 150 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 0000000 | 00000 |
BSPT Female × NPT Male | |||
| 1/8 | 150 psi @ 72° F | 000000 | 00000 |
| 1/4 | 150 psi @ 72° F | 000000 | 00000 |
| 3/8 | 150 psi @ 72° F | 000000 | 00000 |
| 1/2 | 150 psi @ 72° F | 000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 000000 | 00000 |
| 1 | 150 psi @ 72° F | 000000 | 00000 |
Standard-Wall Aluminum Threaded Pipe Nipples and Pipe
Made of aluminum, this pipe is lightweight with good corrosion resistance. Also known as Schedule 40 pipe, it is for use in low-pressure applications. It is seamless, which provides a smooth interior for unrestricted flow.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Oil, Water
- Specifications Met: ASME B1.20.1, ASTM B241
- For Use With: Air, Oil, Water
- Specifications Met: ASME B1.20.1, ASTM B241
| Lg. | Construction | Each | |
1/8 Pipe Size | |||
|---|---|---|---|
| 1 1/2" | Seamless | 0000000 | 00000 |
| 2" | Seamless | 0000000 | 0000 |
| 3" | Seamless | 0000000 | 0000 |
1/4 Pipe Size | |||
| 1 1/2" | Seamless | 0000000 | 0000 |
| 2" | Seamless | 0000000 | 0000 |
| 3" | Seamless | 0000000 | 0000 |
3/8 Pipe Size | |||
| 1 1/2" | Seamless | 0000000 | 0000 |
| 2" | Seamless | 0000000 | 0000 |
| 3" | Seamless | 0000000 | 0000 |
1/2 Pipe Size | |||
| 1 1/2" | Seamless | 0000000 | 0000 |
| 2" | Seamless | 0000000 | 0000 |
| 3" | Seamless | 0000000 | 00000 |
3/4 Pipe Size | |||
| 1 1/2" | Seamless | 0000000 | 0000 |
| 2" | Seamless | 0000000 | 0000 |
| 3" | Seamless | 0000000 | 00000 |
1 Pipe Size | |||
| 2" | Seamless | 0000000 | 0000 |
| 3" | Seamless | 0000000 | 00000 |
1 1/2 Pipe Size | |||
| 2" | Seamless | 0000000 | 00000 |
| 3" | Seamless | 0000000 | 00000 |
2 Pipe Size | |||
| 3" | Seamless | 0000000 | 00000 |
Right-Angle Flow Rectangular Manifolds
Distribute air or fluid to multiple locations from a single supply source with these manifolds. They are also known as headers. They have mounting holes, so you can mount from the top or side.
Aluminum manifolds are the industry standard for the most common types of applications. They are lighter in weight than other metal manifolds and have good corrosion resistance. Anodized aluminum manifolds have a black finish and nickel-plated aluminum manifolds have a shiny finish.
Use a plug (sold separately) to close off any unused inlets and outlets.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Hydraulic Fluid
- Temperature Range: -65° to 250° F
- Maximum Pressure:
Air: 1,000 psi @ 72° F
Water: 1,000 psi @ 72° F
Hydraulic Fluid: 3,000 psi @ 72° F - Maximum Vacuum: 27 in. of Hg @ 72° F
Inlet | Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Outlets | Pipe Size | Dash Size | Pipe Size | Dash Size | Lg. | Wd. | Ht. | Outlet Ctr.-to-Ctr. | Color | Each | |
Outlets on One Side—Standard Outlet Spacing | |||||||||||
| 2 | 3/8 | 06 | 1/4 | 04 | 2 1/8" | 1 1/4" | 1 1/4" | 7/8" | Black | 00000000 | 000000 |
| 2 | 1/2 | 08 | 3/8 | 06 | 2 3/4" | 1 1/2" | 1 1/2" | 1" | Black | 00000000 | 00000 |
| 6 | 1/4 | 04 | 1/8 | 02 | 4 3/4" | 1" | 1" | 3/4" | Black | 00000000 | 00000 |
| 6 | 3/8 | 06 | 1/4 | 04 | 5 5/8" | 1 1/4" | 1 1/4" | 7/8" | Black | 00000000 | 00000 |
| 6 | 1/2 | 08 | 3/8 | 06 | 6 3/4" | 1 1/2" | 1 1/2" | 1" | Black | 00000000 | 00000 |
- For Use With: Air, Water, Hydraulic Fluid
- Temperature Range: -10° to 200° F
- Maximum Pressure: 1,000 psi @ 72° F
- Maximum Vacuum: 27 in. of Hg @ 72° F
- For Use With: Air, Water, Hydraulic Fluid
- Temperature Range: -10° to 200° F
- Maximum Pressure: 1,000 psi @ 72° F
- Maximum Vacuum: 27 in. of Hg @ 72° F
Inlet | Outlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. of Outlets | Pipe Size | Dash Size | Pipe Size | Dash Size | Lg. | Wd. | Ht. | Outlet Ctr.-to-Ctr. | Each | |
Outlets on One Side—Standard Outlet Spacing | ||||||||||
| 4 | 3/8 | 06 | 1/4 | 04 | 4 1/8" | 1 1/4" | 1 1/4" | 7/8" | 0000000 | 000000 |
| Pipe Size | Drive | Pressure Class | Max. Pressure | Each | |
Aluminum—NPT | |||||
|---|---|---|---|---|---|
| 1/8 | Hex | 150 | 150 psi @ 72° F | 00000000 | 00000 |
| 1/8 | External Square | 150 | 150 psi @ 72° F | 000000000 | 0000 |
| 1/4 | External Square | 150 | 150 psi @ 72° F | 000000000 | 0000 |
| 3/8 | Hex | 150 | 150 psi @ 72° F | 00000000 | 0000 |
| 3/8 | External Square | 150 | 150 psi @ 72° F | 000000000 | 0000 |
Aluminum—BSPT | |||||
| 1/4 | Hex | 150 | 150 psi @ 72° F | 00000000 | 0000 |
| 1/4 | External Square | __ | 250 psi @ 72° F | 0000000 | 0000 |
| 3/8 | Hex | 150 | 150 psi @ 72° F | 00000000 | 0000 |
| 3/8 | External Square | __ | 250 psi @ 72° F | 0000000 | 00000 |
| 1/2 | Hex | 150 | 150 psi @ 72° F | 00000000 | 00000 |
| 1/2 | External Square | __ | 250 psi @ 72° F | 0000000 | 00000 |