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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Push-to-Connect Tube Fittings for Air
UN/UNF (SAE Straight)
Male Threads with Gasket
- Temperature Range: 0° to 170° F
- Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
- Specifications Met: ISO 14743, except polybutylene plastic fittings
Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance.
Identification rings (sold separately) snap over the release ring so you can color-code your lines.
Clips (sold separately) align and organize your tubing and fittings.
Metric male threads have either a gasket or a thread sealant to protect against leaks.
For technical drawings and 3-D models, click on a part number.
UN/UNF (SAE Straight)
Male Threads with Gasket
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Inline tees are also known as branch tees.
| For Tube OD | Thread Size  | Thread Pitch, mm | Tube Connection Material | Pipe Connection Material | Gasket Material | Color | Release Ring Color | Max. Pressure | Each | |
Metric Threads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 4mm | M5 | 0.8 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 00000000 | 000000 |
| 6mm | M5 | 0.8 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 00000000 | 00000 |
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Right-angle tees are also known as run tees.
| For Tube OD | Thread Size | Thread Pitch, mm | Tube Connection Material | Pipe Connection Material | Gasket Material | Color | Release Ring Color | Max. Pressure | Each | |
Metric Threads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 4mm | M5 | 0.8 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 00000000 | 000000 |
| 6mm | M5 | 0.8 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 00000000 | 00000 |
Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water
- For Use With: Air, Lubricated Air, Water,
except Manifolds with Swivel: Air, Water - Temperature Range: 32° to 100° F
- Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber
These fittings won’t absorb moisture, so they’re good for water and high-humidity air applications. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.
Nickel-plated brass fittings have better corrosion resistance than unfinished brass fittings.
Metric male threads have a gasket to protect against leaks.
For technical drawings and 3-D models, click on a part number.
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Inline tees are also known as branch tees.
Release Ring | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Thread Size | Thread Pitch, mm | Tube Connection Material | Gasket Material | Color | Material | Color | Max. Pressure | Choose a Pipe Connection Material | Each | |
Metric Threads | |||||||||||
| 4mm | M5 | 0.8 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 00000 | |
| 4mm | M6 | 1 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 0000 | |
| 6mm | M5 | 0.8 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 0000 | |
| 6mm | M6 | 1 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 0000 | |
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Right-angle tees are also known as run tees.
Release Ring | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Thread Size | Thread Pitch, mm | Tube Connection Material | Gasket Material | Color | Material | Color | Max. Pressure | Choose a Pipe Connection Material | Each | |
Metric Threads | |||||||||||
| 4mm | M5 | 0.8 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 00000 | |
| 4mm | M6 | 1 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 0000 | |
| 6mm | M5 | 0.8 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 0000 | |
| 6mm | M6 | 1 | Polybutylene Plastic | Buna-N Rubber | Gray | Plastic | Gray | 140 psi @ 72° F | 00000000 | 0000 | |
High-Temperature Brass Push-to-Connect Tube Fittings for Air and Water
- Temperature Range: 0° to 300° F
- Tubing: Use with firm or hard (Durometer 95A-65D) nylon plastic or polyurethane rubber
- Specifications Met: ISO 14743
These fittings have the highest temperature rating of all our brass push-to-connect tube fittings for air and water. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They are nickel-plated for very good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Inline tees are also known as branch tees.
| For Tube OD | Thread Size | Thread Pitch, mm | Material | O-Ring Material | Max. Pressure | Each | |
Metric Threads | |||||||
|---|---|---|---|---|---|---|---|
| 4mm | M5 | 0.8 | Nickel-Plated Brass | Fluoroelastomer Rubber | 290 psi @ 72° F | 00000000 | 000000 |