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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High-Pressure Brass Threaded Pipe Fittings
These fittings have the strength to handle high-pressure applications. They are brass for good corrosion resistance.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall or panel to create an inlet or outlet.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With:
NPT Threads: Air, Water
NPTF, BSPP and Metric Threads: Air, Natural Gas, Oil, Water - Specifications Met: See table
| Pipe Size  | Max. Pressure | Each | |
NPTF Female | |||
|---|---|---|---|
| 1 | 1,000 psi @ 72° F | 000000000 | 000000 |
Brass Push-to-Connect Tube Fittings for Air
- Temperature Range: 0° to 200° F, except Tube Stem Straight Connectors are 0° to 150° F, and Plugs are 0° to 170° F
- Tubing: See table
These fittings offer good protection against corrosive environments. 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.
Fittings with acrylic thread sealant offer extra protection against leaks.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
Release Ring | For Tube | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Pipe Size | Material | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Material | Hardness Rating | Features | Each | |
NPTF Threads | ||||||||||||
| 5/32" | 1/4 | Nickel-Plated Brass | Plastic | Black | 290 psi @ 72° F | 1/2" | 3/16" | Nylon Plastic, Polyethylene Plastic | Hard | Acrylic Thread Sealant | 000000000 | 000000 |
| 1/4" | 1/8 | Brass | Brass | __ | 250 psi @ 72° F | 9/16" | 1/2" | Nylon Plastic | Hard | __ | 000000000 | 00000 |
| 1/4" | 1/4 | Nickel-Plated Brass | Plastic | Black | 290 psi @ 72° F | 9/16" | 15/64" | Nylon Plastic, Polyethylene Plastic | Hard | Acrylic Thread Sealant | 000000000 | 00000 |
| 3/8" | 1/4 | Brass | Brass | __ | 250 psi @ 72° F | 7/8" | 11/16" | Nylon Plastic | Hard | __ | 000000000 | 00000 |
| 3/8" | 3/8 | Nickel-Plated Brass | Plastic | Black | 290 psi @ 72° F | 7/8" | 7/32" | Nylon Plastic, Polyethylene Plastic | Hard | Acrylic Thread Sealant | 000000000 | 00000 |
| 1/2" | 3/8 | Nickel-Plated Brass | Plastic | Black | 290 psi @ 72° F | 7/8" | 11/32" | Nylon Plastic, Polyethylene Plastic | Hard | Acrylic Thread Sealant | 000000000 | 00000 |
For Tube | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Inlets | Pipe Size | Number of Outlets | For Tube OD | Body Material | Release Ring Material | Max. Pressure | Material | Hardness Rating | Mount Type | Mounting Fasteners Included | Each | |
NPTF Threads | ||||||||||||
| 2 | 3/8 | 4 | 1/4" | Anodized Aluminum | Brass | 150 psi @ 72° F | Nylon Plastic, Polyethylene Plastic | Hard | Screw On | No | 0000000 | 00000 |
| 2 | 3/8 | 4 | 3/8" | Anodized Aluminum | Brass | 150 psi @ 72° F | Nylon Plastic, Polyethylene Plastic | Hard | Screw On | No | 0000000 | 0000 |
Plugs insert into the push-to-connect end of another fitting.
37° Flared Fittings for Steel Tubing
- Tubing: Use with seamless steel
- Specifications Met: SAE J514
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately. Fittings are zinc-plated steel for fair corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on steel tubing that is flared to 37°. Sleeves are zinc-plated steel for fair corrosion resistance. They are also known as ferrules.
