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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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30° Flared Fittings for Steel Tubing
- Specifications Met: See table
Also known as JIS (Japanese Industrial Standard) fittings, these have a 30° flare on one or both ends. Fittings are zinc-plated steel for fair corrosion resistance.
UN/UNF (SAE Straight) male threads have a gasket to protect against leaks. They are also known as O-ring boss threads.
For technical drawings and 3-D models, click on a part number.
Straight Adapters, Male 30° Flared Tube × Male 37° Flared Tube
- Temperature Range: -65° to 500° F
| For Tube OD | Pipe Size  | Material | Max. Pressure | Specifications Met | Each | |
| 3/8" | 1/4 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, ISO 263, ISO 8434-2, JIS B 0202, JIS B 8363, SAE J514 | 0000000 | 000000 |
| 1/2" | 3/8 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, ISO 263, ISO 8434-2, JIS B 0202, JIS B 8363, SAE J514 | 0000000 | 00000 |
| 5/8" | 1/2 | Zinc-Plated Steel | 4,500 psi @ 72° F | ISO 228-1, ISO 263, ISO 8434-2, JIS B 0202, JIS B 8363, SAE J514 | 0000000 | 00000 |
Straight Adapters, Male 30° Flared Tube × Male Threaded Pipe
UN/UNF
(SAE Straight) Male
Threads with Gasket
(SAE Straight) Male
Threads with Gasket
- Temperature Range: -65° to 500° F, except UN/UNF (SAE Straight) Fittings are -20° to 230° F
| For Tube OD | Pipe Size | Thread Size | Material | Gasket Material | Max. Pressure | Specifications Met | Each | |
BSPT Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/8" | 1/4 | __ | Zinc-Plated Steel | __ | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 000000 |
| 1/2" | 3/8 | __ | Zinc-Plated Steel | __ | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 00000 |
| 5/8" | 1/2 | __ | Zinc-Plated Steel | __ | 4,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 00000 |
| 7/8" | 3/4 | __ | Zinc-Plated Steel | __ | 3,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||||||
| 3/8" | 1/4 | 9/16"-18 | Zinc-Plated Steel | Buna-N Rubber | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363, SAE J1926 | 0000000 | 00000 |
| 3/8" | 3/8 | 7/16"-20 | Zinc-Plated Steel | Buna-N Rubber | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363, SAE J1926 | 0000000 | 00000 |
| 1/2" | 3/8 | 9/16"-18 | Zinc-Plated Steel | Buna-N Rubber | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363, SAE J1926 | 0000000 | 00000 |
Straight Adapters, Female 30° Flared Tube × Male 37° Flared Tube
- Temperature Range: -65° to 500° F
Fittings with female tube end have an internal flare that mates with the male tube end of another fitting.
| For Tube OD | Pipe Size | Material | Max. Pressure | Specifications Met | Each | |
| 3/8" | 1/4 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, ISO 263, ISO 8434-2, JIS B 0202, JIS B 8363, SAE J514 | 0000000 | 000000 |
| 1/2" | 3/8 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, ISO 263, ISO 8434-2, JIS B 0202, JIS B 8363, SAE J514 | 0000000 | 00000 |
| 5/8" | 1/2 | Zinc-Plated Steel | 4,500 psi @ 72° F | ISO 228-1, ISO 263, ISO 8434-2, JIS B 0202, JIS B 8363, SAE J514 | 0000000 | 00000 |
| 7/8" | 3/4 | Zinc-Plated Steel | 3,500 psi @ 72° F | ISO 228-1, ISO 263, ISO 8434-2, JIS B 0202, JIS B 8363, SAE J514 | 0000000 | 00000 |
Straight Adapters (Swivels Until Tightened), Female 30° Flared Tube × Female 37° Flared Tube
- Temperature Range: -65° to 500° F
Fittings that swivel until tightened have a built-in nut that rotates 360° for easy installation.
Fittings with female tube end have an internal flare that mates with the male tube end of another fitting.
Straight Connectors, Male 30° Flared Tube
Caps
- Temperature Range: -65° to 500° F
| For Tube OD | Pipe Size | Material | Max. Pressure | Specifications Met | Each | |
| 1/4" | 1/8 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 000000 |
| 3/8" | 1/4 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 0000 |
| 1/2" | 3/8 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 0000 |
| 5/8" | 1/2 | Zinc-Plated Steel | 4,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 0000 |
| 3/4" | 5/8 | Zinc-Plated Steel | 4,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 7/8" | 3/4 | Zinc-Plated Steel | 3,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 00000 |
| 1 1/8" | 1 | Zinc-Plated Steel | 3,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 1 3/8" | 1 1/4 | Zinc-Plated Steel | 2,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 1 5/8" | 1 1/2 | Zinc-Plated Steel | 2,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 2 1/8" | 2 | Zinc-Plated Steel | 2,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
Plugs
- Temperature Range: -65° to 500° F
| For Tube OD | Pipe Size | Material | Max. Pressure | Specifications Met | Each | |
| 1/4" | 1/8 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 000000 |
| 3/8" | 1/4 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 0000 |
| 1/2" | 3/8 | Zinc-Plated Steel | 5,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 0000 |
| 5/8" | 1/2 | Zinc-Plated Steel | 4,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 0000 |
| 3/4" | 5/8 | Zinc-Plated Steel | 4,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 7/8" | 3/4 | Zinc-Plated Steel | 3,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 0000000 | 00000 |
| 1 1/8" | 1 | Zinc-Plated Steel | 3,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 1 3/8" | 1 1/4 | Zinc-Plated Steel | 2,500 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 1 5/8" | 1 1/2 | Zinc-Plated Steel | 2,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
| 2 1/8" | 2 | Zinc-Plated Steel | 2,000 psi @ 72° F | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 00000 |
Plug and Cap Assortments
- Temperature Range: -65° to 500° F
| Number of Pieces | Includes | Material | Specifications Met | Each | |
| 24 | Plug for 3/8" Tube OD, 1/4 Pipe (2 Each) Plug for 1/2" Tube OD, 3/8 Pipe (2 Each) Plug for 5/8" Tube OD, 1/2 Pipe (2 Each) Plug for 7/8" Tube OD, 3/4 Pipe (2 Each) Plug for 1-1/8" Tube OD, 1 Pipe (2 Each) Plug for 1-3/8" Tube OD, 1-1/4 Pipe (2 Each) Cap for 3/8" Tube OD, 1/4 Pipe (2 Each) Cap for 1/2" Tube OD, 3/8 Pipe (2 Each) Cap for 5/8" Tube OD, 1/2 Pipe (2 Each) Cap for 7/8" Tube OD, 3/4 Pipe (2 Each) Cap for 1-1/8" Tube OD, 1 Pipe (2 Each) Cap for 1-3/8" Tube OD, 1-1/4 Pipe (2 Each) Metal Box | Zinc-Plated Steel | ISO 228-1, JIS B 0202, JIS B 8363 | 00000000 | 0000000 |