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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About Fire-Fighting Hose Threads
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Rocker-Lug Fire Hydrant Caps and Plugs
Thread these caps and plugs onto fire hydrants and washdown equipment to close off the line. Their rocker lugs are easy to grip, so you can tighten them quickly. Tighten with a hook-style spanner wrench (not included). Caps and plugs are brass for good corrosion resistance.
NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads. Chicago Fire Department threads are only compatible with other Chicago Fire Department threads.
| Fire Hose Trade Size | Thread Type | Material | Lg. | Chain Lg. | Each | |
Cap | ||||||
|---|---|---|---|---|---|---|
| 1 | NH/NST | Brass | 1 7/32" | 9" | 00000000 | 000000 |
| 1 1/2 | NH/NST | Brass | 1 1/8" | 9" | 00000000 | 00000 |
| 2 1/2 | NH/NST | Brass | 1 7/16" | 9" | 00000000 | 00000 |
Plug | ||||||
| 1 1/2 | NH/NST | Brass | 1 11/16" | 9" | 0000000 | 00000 |
| 2 1/2 | NH/NST | Brass | 2 3/32" | 9" | 0000000 | 00000 |
| 2 1/2 | Chicago Fire Department | Brass | 2 3/32" | 9" | 0000000 | 00000 |
Threaded Hose Fittings for Compressed Gas
Use these fittings to connect welding hose to pressure regulators and torches. They are also known as CGA (Compressed Gas Association) fittings. Fittings are brass for good corrosion resistance.
Fittings with left-hand threads are identified with a notch in the nut.
Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.
- Maximum Pressure: 200 psi @ 72° F
- Maximum Temperature: 120° F
Metal Garden Hose Fittings
Connect these fittings to rubber or plastic garden hose for a variety of water supply applications.
Brass fittings have good corrosion resistance and are softer than other metal fittings, so they’re easier to thread together.
| Garden Hose Trade Size | Washer Material | Lg. | Pkg. Qty. | Pkg. | |
Brass | |||||
|---|---|---|---|---|---|
| 3/4 | Buna-N Rubber | 9/16" | 2 | 00000000 | 00000 |
Metal Cam-and-Groove Hose Couplings for Water
A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.
Brass couplings are softer than aluminum plugs and sockets, so they’re easier to thread together. They have good corrosion resistance.
Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Specifications Met: Fed. Spec. A-A-59326
- Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings
| Coupling Size | Plug OD | Max. Pressure | Each | |
Brass | ||||
|---|---|---|---|---|
| 1/2 | 15/16" | 250 psi @ 72° F | 000000000 | 000000 |
| 3/4 | 1 1/4" | 250 psi @ 72° F | 00000000 | 00000 |
| 1 | 1 7/16" | 250 psi @ 72° F | 00000000 | 00000 |
| 1 1/4 | 1 13/16" | 250 psi @ 72° F | 00000000 | 00000 |
| 1 1/2 | 2 1/8" | 250 psi @ 72° F | 00000000 | 00000 |
| 2 | 2 1/2" | 250 psi @ 72° F | 00000000 | 00000 |
| 2 1/2 | 3" | 200 psi @ 72° F | 00000000 | 00000 |
| 3 | 3 5/8" | 200 psi @ 72° F | 00000000 | 00000 |
| 4 | 4 3/4" | 150 psi @ 72° F | 00000000 | 00000 |
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Specifications Met: Fed. Spec. A-A-59326
- Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings
Couplings with locking levers prevent accidental disconnection. The locks engage automatically when the coupling is connected. Press the locks simultaneously to disengage.
Caps | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Levers | Replacement Gaskets | Replacement Levers | ||||||||||
| Coupling Size | Socket ID | No. of | Material | Pull Ring Material | Max. Pressure | Each | Pkg. Qty. | Pkg. | Each | |||
Brass | ||||||||||||
| 1 | 1 7/16" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 000000000 | 000000 | 10 | 0000000 | 00000 | 000000000 | 000000 |
| 1 1/4 | 1 13/16" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 000000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 00000 |
| 1 1/2 | 2 1/8" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 000000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 00000 |
| 2 | 2 1/2" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 000000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 00000 |
| 2 1/2 | 3" | 2 | Brass | Zinc-Plated Steel | 200 psi @ 72° F | 000000000 | 000000 | 10 | 0000000 | 0000 | 000000000 | 00000 |
| 3 | 3 5/8" | 2 | Brass | Zinc-Plated Steel | 200 psi @ 72° F | 000000000 | 000000 | 10 | 0000000 | 00000 | 000000000 | 00000 |
| 4 | 4 3/4" | 2 | Brass | Zinc-Plated Steel | 150 psi @ 72° F | 000000000 | 000000 | 10 | 0000000 | 00000 | 000000000 | 00000 |
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Specifications Met: Fed. Spec. A-A-59326
- Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings
Caps | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Levers | Replacement Gaskets | Replacement Levers | ||||||||||
| Coupling Size | Socket ID | No. of | Material | Pull Ring Material | Max. Pressure | Each | Pkg. Qty. | Pkg. | Each | |||
Brass | ||||||||||||
| 1/2 | 15/16" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 000000000 | 000000 | 10 | 0000000 | 00000 | 000000000 | 00000 |
| 3/4 | 1 1/4" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 00000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 0000 |
| 1 | 1 7/16" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 00000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 0000 |
| 1 1/4 | 1 13/16" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 00000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 0000 |
| 1 1/2 | 2 1/8" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 00000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 0000 |
| 2 | 2 1/2" | 2 | Brass | Zinc-Plated Steel | 250 psi @ 72° F | 00000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 0000 |
| 2 1/2 | 3" | 2 | Brass | Zinc-Plated Steel | 200 psi @ 72° F | 00000000 | 00000 | 10 | 0000000 | 0000 | 000000000 | 0000 |
| 3 | 3 5/8" | 2 | Brass | Zinc-Plated Steel | 200 psi @ 72° F | 00000000 | 00000 | 10 | 0000000 | 00000 | 000000000 | 0000 |
Brass Low-Pressure Barbed Tube Fittings for Air and Water
Made of brass, these fittings resist corrosion from water and are more durable than plastic and aluminum fittings. Use them for low-pressure HVAC systems, drain lines, and other fluid transfer applications, as well as air lines where water vapor and condensate form. The barbs tightly grip tubing for a secure hold. For the best grip, make sure your tubing is squarely cut.
- Temperature Range: See table
- Tubing: See table
For Tube | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube ID | Number of Barbs | Material | Max. Pressure | Temp. Range, °F | Lg. | Material | Hardness Rating | Hardness | Each | |
| 1/16" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 5/64" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 3/32" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 27/64" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 1/8" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 17/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 0.17" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | 9/16" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
| 1/4" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | 11/16" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
| 3/8" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | 13/16" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
| 4mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 17/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 6mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 13/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 8mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 1 1/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 10mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 1 1/8" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 12mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 1 5/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |