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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Nickel-Plated Brass Compression Fittings for Copper Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Lubricants, Mineral Oil, Natural Gas, Steam, Water
- Temperature Range: -75° to 550° F, except 90° elbow adapters with BSPP threads are 0° to 170° F
- Tubing: Use with copper
- Specifications Met: DIN 3861, except nuts meet DIN 3870
With a nickel-plated finish, these compression fittings resist corrosion better than plain brass fittings. They have a single sleeve (ferrule) made of plain brass that gently bites into copper tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. These fittings are also known as flareless fittings. All meet DIN standards for tube fitting dimensions.
For technical drawings and 3-D models, click on a part number.
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD, mm | Wall Thickness, mm | Pipe Size | Material | Maximum Pressure | Each | |
BSPP Threads | ||||||
| 4 | 1 | 1/8 | Nickel-Plated Brass | 1,800 psi @ 72° F | 00000000 | 00000 |
| 6 | 1 | 1/8 | Nickel-Plated Brass | 2,500 psi @ 72° F | 00000000 | 0000 |
| 6 | 1 | 1/4 | Nickel-Plated Brass | 2,500 psi @ 72° F | 00000000 | 0000 |
| 8 | 1 | 1/8 | Nickel-Plated Brass | 2,100 psi @ 72° F | 00000000 | 0000 |
| 8 | 1 | 1/4 | Nickel-Plated Brass | 2,100 psi @ 72° F | 00000000 | 0000 |
| 10 | 1 | 1/4 | Nickel-Plated Brass | 1,600 psi @ 72° F | 00000000 | 0000 |
| 12 | 1 | 3/8 | Nickel-Plated Brass | 1,000 psi @ 72° F | 00000000 | 00000 |
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD, mm | Wall Thickness, mm | Nut Material | Maximum Pressure | Length, mm | Each | |
Short Nuts | ||||||
| 4 | 1 | Nickel-Plated Brass | 1,800 psi @ 72° F | 11 | 00000000 | 00000 |
| 6 | 1 | Nickel-Plated Brass | 2,500 psi @ 72° F | 12 | 00000000 | 000 |
| 8 | 1 | Nickel-Plated Brass | 2,100 psi @ 72° F | 12 | 00000000 | 000 |
| 10 | 1 | Nickel-Plated Brass | 1,600 psi @ 72° F | 16 | 00000000 | 0000 |
| 12 | 1 | Nickel-Plated Brass | 1,000 psi @ 72° F | 16 | 00000000 | 0000 |
Tight-Space 37° Flared Fittings for Aluminum Tubing
- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Water
- Tubing: Use with seamless aluminum
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are aluminum, which is lightweight with good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
For technical drawings and 3-D models, click on a part number.
Push-to-Connect Tube Fittings for Air
UN/UNF (SAE Straight)
Male Threads with Gasket
- Temperature Range: 0° to 170° F, except polybutylene plastic fittings are 32° to 140° F
- Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
- Specifications Met: ISO 14743, except cartridges and 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. Use them in low-pressure applications.
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.
Fittings with PTFE thread sealant offer extra protection against leaks.
Metric male threads have either a gasket or a thread sealant to protect against leaks. BSPP and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
For technical drawings and 3-D models, click on a part number.
UN/UNF (SAE Straight)
Male Threads with Gasket
Fittings with external hex or slotted drive allow for easy adjustments in tight spaces; they are also known as banjo-style fittings.
| For Tube OD | Pipe Size | Thread Size | Tube Connection Material | Pipe Connection Material | Gasket Material | Color | Release Ring Color | Max. Pressure | Drive Size | Features | Each | |
NPT Threads | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5/32" | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 33/64" | PTFE Thread Sealant | 00000000 | 000000 |
| 3/16" | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 35/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 1/4" | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 33/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 1/4" | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 43/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 1/4" | 3/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 53/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 5/16" | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 35/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 5/16" | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 45/64" | PTFE Thread Sealant | 00000000 | 000000 |
| 3/8" | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 43/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 3/8" | 3/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 53/64" | PTFE Thread Sealant | 00000000 | 00000 |
BSPP Threads | ||||||||||||
| 4mm | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 13mm | __ | 00000000 | 00000 |
| 6mm | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 13mm | __ | 00000000 | 00000 |
| 6mm | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 17mm | __ | 00000000 | 00000 |
| 8mm | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 13mm | __ | 00000000 | 00000 |
| 8mm | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 17mm | __ | 00000000 | 00000 |
| 8mm | 3/8 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 20mm | __ | 00000000 | 00000 |
| 10mm | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 17mm | __ | 00000000 | 00000 |
| 10mm | 3/8 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 20mm | __ | 00000000 | 00000 |
| 10mm | 1/2 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 25mm | __ | 00000000 | 00000 |
| 12mm | 3/8 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 20mm | __ | 00000000 | 00000 |
| 12mm | 1/2 | __ | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 25mm | __ | 00000000 | 00000 |
BSPT Threads | ||||||||||||
| 6mm | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 13mm | PTFE Thread Sealant | 00000000 | 00000 |
| 6mm | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 17mm | PTFE Thread Sealant | 00000000 | 00000 |
| 8mm | 1/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 13mm | PTFE Thread Sealant | 00000000 | 00000 |
| 8mm | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 17mm | PTFE Thread Sealant | 00000000 | 00000 |
| 10mm | 1/4 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 17mm | PTFE Thread Sealant | 00000000 | 00000 |
| 10mm | 3/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 21mm | PTFE Thread Sealant | 00000000 | 00000 |
| 12mm | 3/8 | __ | Nylon Plastic | Nickel-Plated Brass | __ | Black | Black | 290 psi @ 72° F | 21mm | PTFE Thread Sealant | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||||||||||
| 1/8" | __ | 10-32 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 15/64" | __ | 00000000 | 0000 |
| 5/32" | __ | 10-32 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 15/64" | __ | 00000000 | 0000 |
| 1/4" | __ | 10-32 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 15/64" | __ | 00000000 | 00000 |
UN/UNF (SAE Straight)
Male Threads with Gasket
Fittings with external hex or slotted drive allow for easy adjustments in tight spaces; they are also known as banjo-style fittings.
| For Tube OD, mm | Thread Size | Thread Pitch, mm | Tube Connection Material | Pipe Connection Material | Gasket Material | Color | Release Ring Color | Max. Pressure | Each | |
Metric Threads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3 | M3 | 0.5 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 00000000 | 000000 |
| 4 | M5 | 0.8 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 00000000 | 00000 |
| 6 | M5 | 0.8 | Nylon Plastic | Nickel-Plated Brass | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 00000000 | 00000 |
Fittings with external hex or slotted drive allow for easy adjustments in tight spaces; they are also known as banjo-style fittings.
| For Tube OD | Pipe Size | Thread Size | Material | Gasket Material | Color | Release Ring Color | Max. Pressure | Drive Size | Features | Each | |
NPT Threads | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5/32" | 1/8 | __ | Nylon Plastic | __ | Black | Black | 290 psi @ 72° F | 33/64" | PTFE Thread Sealant | 00000000 | 000000 |
| 1/4" | 1/8 | __ | Nylon Plastic | __ | Black | Black | 290 psi @ 72° F | 33/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 1/4" | 1/4 | __ | Nylon Plastic | __ | Black | Black | 290 psi @ 72° F | 43/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 3/8" | 1/4 | __ | Nylon Plastic | __ | Black | Black | 290 psi @ 72° F | 53/64" | PTFE Thread Sealant | 00000000 | 00000 |
| 3/8" | 3/8 | __ | Nylon Plastic | __ | Black | Black | 290 psi @ 72° F | 53/64" | PTFE Thread Sealant | 00000000 | 00000 |
BSPP Threads | |||||||||||
| 4mm | 1/8 | __ | Nylon Plastic | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 13mm | __ | 00000000 | 00000 |
| 6mm | 1/8 | __ | Nylon Plastic | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 13mm | __ | 00000000 | 00000 |
| 6mm | 1/4 | __ | Nylon Plastic | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 17mm | __ | 00000000 | 00000 |
| 8mm | 1/4 | __ | Nylon Plastic | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 17mm | __ | 00000000 | 00000 |
| 8mm | 3/8 | __ | Nylon Plastic | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 20mm | __ | 00000000 | 00000 |
| 10mm | 3/8 | __ | Nylon Plastic | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 20mm | __ | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | |||||||||||
| 5/32" | __ | 10-32 | Nylon Plastic | Buna-N Rubber | Black | Black | 290 psi @ 72° F | 15/64" | __ | 00000000 | 00000 |
Fittings with external hex or slotted drive allow for easy adjustments in tight spaces; they are also known as banjo-style fittings.
| 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 | 00000 |
| For Tube OD | Material | Choose a Color | Each | |
| 1/8" | Nylon Plastic | Yellow | 00000000 | 00000 |
| 5/32" | Nylon Plastic | 00000000 | 000 | |
| 3/16" | Nylon Plastic | 00000000 | 000 | |
| 1/4" | Nylon Plastic | 00000000 | 000 | |
| 5/16" | Nylon Plastic | 00000000 | 000 | |
| 3/8" | Nylon Plastic | 00000000 | 000 | |
| 6mm | Nylon Plastic | 00000000 | 000 | |
| 10mm | Nylon Plastic | 00000000 | 0000 | |
| 12mm | Nylon Plastic | 00000000 | 0000 |
