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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Universal-Thread Plated Brass Pipe Fittings
When you're unsure of the exact thread type you need, these fittings have universal threads that are compatible with the most common ones (NPT, NPTF, BSPP, BSPT). Made of nickel-plated brass, they resist corrosion better than plain brass fittings. A reusable Buna-N O-ring protects against leaks.
Connectors, adapters, and reducers all have a hex-shaped body, so you can tighten them with a wrench.
Fittings with intermittent swivel rotate 360° as needed to allow movement.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Hydraulic Fluid, Oil, Water
- Fabrication: Machined
Pipe Size | Hex Wd. | |||||||
|---|---|---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | (A) | (B) | Material | O-Ring Material | Each | |
Universal, NPT, NPTF, BSPP, BSPT Male Threads | ||||||||
| 1/4 | 1/8 | 1,400 psi @ 72° F | 5/8" | 9/16" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 00000 |
| 3/8 | 1/4 | 1,000 psi @ 72° F | 13/16" | 5/8" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 0000 |
| 1/2 | 1/4 | 700 psi @ 72° F | 13/16" | 5/8" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 0000 |
- For Use With: Air, Hydraulic Fluid, Oil, Water
- Fabrication: Machined
Pipe Size | |||||||
|---|---|---|---|---|---|---|---|
| (A) | (B) | Max. Pressure | Hex Wd. | Material | O-Ring Material (Male Connection) | Each | |
NPTF Female × Universal, NPT, NPTF, BSPP, BSPT Male Threads | |||||||
| 1/8 | 1/4 | 1,400 psi @ 72° F | 5/8" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 00000 |
| 1/4 | 1/8 | 1,400 psi @ 72° F | 9/16" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 0000 |
| 3/8 | 1/8 | 1,000 psi @ 72° F | 5/8" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 0000 |
| 3/8 | 1/4 | 1,000 psi @ 72° F | 5/8" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 0000 |
| 1/2 | 1/8 | 700 psi @ 72° F | 5/8" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 00000 |
| 1/2 | 1/4 | 700 psi @ 72° F | 5/8" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 00000 |
| 1/2 | 3/8 | 700 psi @ 72° F | 13/16" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 00000 |
| 3/4 | 3/8 | 1,200 psi @ 72° F | 13/16" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 00000 |
| 3/4 | 1/2 | 1,200 psi @ 72° F | 13/16" | Nickel-Plated Brass | Buna-N Rubber | 0000000 | 00000 |
Universal-Thread Push-to-Connect Tube Fittings for Air and Water
Threads
with Gasket
- Temperature Range: 0° to 175° F
- Tubing: Use with firm (Durometer 85A-100A) nylon plastic or polyurethane rubber
- Specifications Met: ISO 14743
Make lightweight connections without the hassle of matching the exact thread type—these fittings connect to NPT, NPTF, BSPP, BSPT, and other universal threads. With a nylon body and nickel-plated brass threads, these fittings are lighter than most metal fittings, and withstand corrosion better than plain brass threads. They also have a reusable gasket to guard against leaks. Connect the tube ends to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect them, push the release ring and pull the tubing out of the fitting. These fittings are sometimes known as instant fittings. All meet ISO 14743, which is an international standard for push-to-connect fittings for plastic tubing.
For technical drawings and 3-D models, click on a part number.
Threads
with Gasket
Release Ring | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Inlets | For Tube OD (Inlet) | Pipe Size (Inlet) | Number of Outlets | For Tube OD (Outlet) | Pipe Connection Material | Tube Connection Material | Gasket Material | Color | Material | Color | Maximum Pressure | Each | |
BSPP, BSPT, NPT, NPTF, Universal Threads | |||||||||||||
| 2 | 1/4" | 1/8 | 3 | 5/32" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 000000 |
| 2 | 1/4" | 1/4 | 3 | 5/32" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 00000 |
| 2 | 5/16" | 1/8 | 3 | 5/32" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 00000 |
| 2 | 5/16" | 1/8 | 3 | 1/4" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 00000 |
| 2 | 5/16" | 1/4 | 3 | 5/32" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 00000 |
| 2 | 5/16" | 1/4 | 3 | 1/4" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 00000 |
| 2 | 3/8" | 1/4 | 3 | 1/4" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 00000 |
| 2 | 3/8" | 3/8 | 3 | 1/4" | Nickel-Plated Brass | Nylon Plastic | Buna-N Rubber | Black | Plastic | Blue | 250 psi @ 72° F | 00000000 | 00000 |
Male-Female Round Universal Thread Adapters with Through Hole
Connect male- and female-threaded parts of different thread types and sizes, while allowing air, liquids, wire, or other thin materials to pass through. Attach your parts to these adapters and use a hex key to secure the connection. Made of 304 stainless steel, all will hold up in wet environments. O-rings on each side create a tight seal, making them good for vacuum and compressed-air applications.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Thread Type | Thread Length | Gender | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | Thread Size (B) | (A) | (B) | (A) | (B) | (A) | (B) | Hex Size | OD | Tensile Strength, psi | Hardness | O-Ring Material | Each | |
304 Stainless Steel | |||||||||||||||
| 3/8 | __ | 10-32, M5 | BSPP, BSPT, NPT, NPTF, Universal | BSPP, BSPT, NPT, NPTF, Metric, UNF, Universal | 0.25" | 9/64" | Male | Female | 13/64" | 27/32" | 73,000 | Rockwell B70 | Buna-N Rubber | 00000000 | 000000 |
| 3/8 | 1/4 | __ | BSPP, BSPT, NPT, NPTF, Universal | BSPP, BSPT, NPT, NPTF, Universal | 0.25" | 1/4" | Male | Female | 13/64" | 27/32" | 73,000 | Rockwell B70 | Buna-N Rubber | 00000000 | 00000 |
| 3/8 | 1/8 | __ | BSPP, BSPT, NPT, NPTF, Universal | BSPP, BSPT, NPT, NPTF, Universal | 0.25" | 1/4" | Male | Female | 13/64" | 27/32" | 73,000 | Rockwell B70 | Buna-N Rubber | 00000000 | 00000 |
Male Round Universal Thread Adapters with Through Hole
Join two female-threaded parts of various thread types and sizes, while allowing air, liquids, wire, or other thin materials to pass through. Attach your parts to these adapters and use a hex key to secure the connection. Made of 304 stainless steel, all will hold up in wet environments. O-rings on each side create a tight seal, making them good for vacuum and compressed-air applications.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Thread Type | Thread Length | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | Thread Size (B) | (A) | (B) | (A) | (B) | Hex Size | OD | Tensile Strength, psi | Hardness | O-Ring Material | Each | |
304 Stainless Steel | |||||||||||||
| 3/8 | __ | 10-32, M5 | BSPP, BSPT, NPT, NPTF, Universal | BSPP, BSPT, NPT, NPTF, Metric, UNF, Universal | 0.25" | 13/64" | 13/64" | 27/32" | 73,000 | Rockwell B70 | Buna-N Rubber | 00000000 | 000000 |
| 3/8 | 1/4 | __ | BSPP, BSPT, NPT, NPTF, Universal | BSPP, BSPT, NPT, NPTF, Universal | 0.25" | 1/4" | 13/64" | 27/32" | 73,000 | Rockwell B70 | Buna-N Rubber | 00000000 | 00000 |
| 3/8 | 1/8 | __ | BSPP, BSPT, NPT, NPTF, Universal | BSPP, BSPT, NPT, NPTF, Universal | 0.25" | 1/4" | 13/64" | 27/32" | 73,000 | Rockwell B70 | Buna-N Rubber | 00000000 | 00000 |
| 3/8 | 3/8 | __ | BSPP, BSPT, NPT, NPTF, Universal | BSPP, BSPT, NPT, NPTF, Universal | 0.25" | 1/4" | 13/64" | 27/32" | 73,000 | Rockwell B70 | Buna-N Rubber | 00000000 | 00000 |