About Fire-Fighting Hose Threads
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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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Fire-Fighting Hose Fittings
Connect these fittings to fire hydrants and washdown equipment. Made of brass, they have good corrosion resistance. Some have a hex in the middle so you can tighten them with a wrench.
NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads. BIT (British Instantaneous Thread) threads are commonly used in the United Kingdom, Ireland, India, Hong Kong, and parts of Canada. They’re also known as John Morris couplings.
For technical drawings and 3-D models, click on a part number.
Rocker-Lug Fire-Fighting Hose Fittings
The rocker lugs on these fittings allow for easy gripping, so you can quickly connect to fire hydrants and washdown equipment. Tighten with a hook-style spanner wrench (sold separately).
Fittings that swivel until tightened rotate to help prevent kinking during installation.
NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads. Male NPSH (National Pipe Straight Hose) threads are compatible with female NPSH threads. Female NPSH threads are compatible with male NPSH, NPT, NPTF, and NPSM threads.
Aluminum fittings are more lightweight than brass fittings. They have good abrasion and corrosion resistance. Brass fittings are softer than aluminum fittings, so they’re easier to thread together. They have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| Fire Hose Trade Size | Pipe Size | Each | |
Aluminum | |||
|---|---|---|---|
| 1 1/2 | 1 1/2 | 0000000 | 000000 |
| Fire Hose Trade Size | Pipe Size | Each | |
Brass | |||
|---|---|---|---|
| 1 1/2 | 1 1/2 | 0000000 | 000000 |
| Pipe Size | Fire Hose Trade Size | Each | |
Aluminum | |||
|---|---|---|---|
| 2 1/2 | 2 1/2 | 0000000 | 0000000 |
| Fire Hose Trade Size | Each | |
Aluminum | ||
|---|---|---|
| 1 1/2 | 0000000 | 0000000 |
Fire Hose Trade Size | |||
|---|---|---|---|
| (A) | (B) | Each | |
Aluminum | |||
| 2 1/2 | 2 | 0000000 | 000000 |
| Fire Hose Trade Size (A) | Pipe Size (B) | Each | |
Brass | |||
|---|---|---|---|
| 1 1/2 | 2 1/2 | 0000000 | 000000 |
| Pipe Size (A) | Fire Hose Trade Size (B) | Each | |
Brass | |||
|---|---|---|---|
| 1 1/2 | 2 1/2 | 0000000 | 000000 |
Pin-Lug Fire-Fighting Hose Fittings
The pin lugs on these fittings allow for easy gripping, so you can quickly connect to fire hydrants and washdown equipment. Tighten with a hook-style spanner wrench (sold separately). All are brass for good corrosion resistance.
Fittings that swivel until tightened rotate to help prevent kinking during installation.
NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads.
For technical drawings and 3-D models, click on a part number.
| Fire Hose Trade Size | Pipe Size | Material | Each | |
| 1 1/2 | 1 1/2 | Brass | 0000000 | 000000 |
| Fire Hose Trade Size | Pipe Size | Material | Each | |
| 1 1/2 | 1 1/2 | Brass | 0000000 | 000000 |
| Pipe Size | Fire Hose Trade Size | Material | Each | |
| 1 1/2 | 1 1/2 | Brass | 0000000 | 000000 |
| Fire Hose Trade Size | Material | Each | |
| 1 1/2 | Brass | 0000000 | 0000000 |
| Fire Hose Trade Size (A) | Pipe Size (B) | Material | Each | |
| 2 1/2 | 2 | Brass | 0000000 | 0000000 |
| Pipe Size (A) | Fire Hose Trade Size (B) | Material | Each | |
| 2 | 2 1/2 | Brass | 0000000 | 0000000 |