How to Identify and Measure Fittings
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Aluminum Low-Pressure Barbed Tube Fittings for Air and Water
- For Use With: Air, Lubricated Air, Water
- Temperature Range: -40° to 230° F
- Tubing: Use with hard (Durometer 75A-60D) EVA plastic, polyethylene plastic, polyurethane rubber or PVDF plastic
Made of aluminum, these fittings are lighter in weight than other metal barbed tube fittings and have good corrosion resistance. The barb grips onto tubing, providing a secure hold with no clamp required.
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 Tube ID | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/16" | Aluminum | 125 psi @ 72° F | 3/16" | 1/4" | 00000000 | 000000 |
| 1/8" | Aluminum | 125 psi @ 72° F | 1/4" | 5/16" | 00000000 | 00000 |
| 0.17" | Aluminum | 125 psi @ 72° F | 5/16" | 13/32" | 00000000 | 00000 |
| 1/4" | Aluminum | 125 psi @ 72° F | 3/8" | 13/32" | 00000000 | 00000 |
| 3/8" | Aluminum | 125 psi @ 72° F | 1/2" | 13/32" | 00000000 | 00000 |
| 1/2" | Aluminum | 125 psi @ 72° F | 3/4" | 53/64" | 00000000 | 00000 |
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: -65° to 75° F
- Tubing: Use with polyethylene plastic
Compression fittings bite into tubing for a tighter seal than push-to-connect fittings. They’re also known as flareless fittings.
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.
- Temperature Range: See table
- Tubing: See table
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 Tube | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tube ID | Number of Barbs | Straight Body Shape | Material | Max. Pressure | Temp. Range, °F | Lg. | For Hole Dia. | For Max. Wall Thick. | Material | Hardness Rating | Hardness | Each | |
| 3/64" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 21/32" | 3/16" | 1/4" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 000000 |
| 3/64" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 23/32" | 1/4" | 5/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 1/16" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 25/32" | 3/16" | 1/4" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 1/16" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 27/32" | 1/4" | 5/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 1/16" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 61/64" | 5/16" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 3/32" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 25/32" | 3/16" | 1/4" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 3/32" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 27/32" | 1/4" | 5/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 3/32" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 61/64" | 5/16" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 1/8" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 1 1/32" | 1/4" | 5/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 1/8" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 1 1/8" | 5/16" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 0.17" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 1 7/32" | 3/8" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 0.17" | Multiple | Hex | Brass | 100 psi @ 72° F | -65° to 75° | 1 3/8" | 5/16" | 11/64" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
| 3/16" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 1 17/64" | 5/16" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 3/16" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 1 9/32" | 3/8" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 1/4" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 1 17/32" | 1/2" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 1/4" | Multiple | Hex | Brass | 100 psi @ 72° F | -65° to 75° | 1 5/8" | 3/8" | 3/8" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 00000 |
| 3/8" | Single | Hex | Brass | 125 psi @ 72° F | -40° to 500° | 1 19/32" | 1/2" | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
- Temperature Range: -40° to 500° F
- Tubing: Use with firm (Durometer 85A) polyurethane rubber
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 Tube ID (A) | Number of Barbs (A) | For Tube ID (B) | Number of Barbs (B) | Straight Body Shape | Material | Max. Pressure | Lg. | For Hole Dia. | For Max. Wall Thick. | Each | |
| 0.17" | Single | 3/32" | Single | Hex | Brass | 125 psi @ 72° F | 1 3/32" | 1/2" | 13/32" | 00000000 | 000000 |
| 0.17" | Single | 3/32" | Single | Hex | Brass | 125 psi @ 72° F | 1 41/64" | 3/4" | 53/64" | 00000000 | 00000 |
| 1/4" | Single | 0.17" | Single | Hex | Brass | 125 psi @ 72° F | 1 3/8" | 1/2" | 13/32" | 00000000 | 00000 |
| 1/4" | Single | 0.17" | Single | Hex | Brass | 125 psi @ 72° F | 1 59/64" | 3/4" | 53/64" | 00000000 | 00000 |
| 3/8" | Single | 0.17" | Single | Hex | Brass | 125 psi @ 72° F | 1 13/32" | 1/2" | 13/32" | 00000000 | 00000 |
| 3/8" | Single | 0.17" | Single | Hex | Brass | 125 psi @ 72° F | 1 61/64" | 3/4" | 53/64" | 00000000 | 00000 |
| 3/8" | Single | 1/4" | Single | Hex | Brass | 125 psi @ 72° F | 1 9/16" | 1/2" | 13/32" | 00000000 | 00000 |
| 3/8" | Single | 1/4" | Single | Hex | Brass | 125 psi @ 72° F | 2 7/64" | 3/4" | 53/64" | 00000000 | 00000 |
Tight-Seal Plastic Barbed Tube Fittings for Air and Water
Minimize leaks in your line—these fittings have a single barb that creates a smooth clamping surface for extra-tight connections. Fittings are nylon for excellent impact and abrasion resistance.
NPSM (National Pipe Straight Mechanical) male threads are compatible with NPSM and NPSH threads.
- Temperature Range: -50° to 275° F
- Tubing: Use with firm (Durometer 75A-80A) polyurethane rubber or PVC plastic
- Clarity: Black: Opaque; White: Opaque; Off-White: Semi-Clear
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 Tube ID | Pipe Size | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Pkg. Qty. | Choose a Color | Pkg. | |
NPSM Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 5/32" | 1/4 | Nylon Plastic | Not Rated | 1/2" | 23/64" | 10 | 0000000 | 000000 | |
| 3/16" | 1/4 | Nylon Plastic | Not Rated | 1/2" | 27/64" | 10 | 0000000 | 00000 | |
| 1/4" | 1/4 | Nylon Plastic | Not Rated | 1/2" | 31/64" | 10 | 0000000 | 00000 | |
| 5/16" | 1/4 | Nylon Plastic | Not Rated | 1/2" | 17/32" | 10 | 0000000 | 00000 | |
| 3/8" | 1/4 | Nylon Plastic | Not Rated | 1/2" | 1/2" | 10 | 0000000 | 00000 | |
| 1/2" | 1/4 | Nylon Plastic | Not Rated | 1/2" | 37/64" | 10 | 0000000 | 00000 | |
Metal Barbed Hose Fittings for Air and Water
Slide the barbed end into rubber hose and secure with the appropriate clamp or crimp-on hose ferrule.
Brass fittings are softer than other metal fittings, so they’re easier to thread together. Plain brass fittings have good corrosion resistance.Stainless steel fittings have very good corrosion resistance. 303 stainless steel fittings won’t rust when exposed to water, making them good for areas that require frequent cleanings. Hose connectors are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose.
Through-wall straight connectors are also known as bulkhead couplings and panel-mount couplings. They mount through your wall or panel to create an inlet or outlet.
- Maximum Pressure: 250 psi @ 72° F
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: -30° to 200° F
- Attachment Type: Use Crimp-On Hose Ferrules, Worm-Drive Clamps or Band-and-Buckle Clamps
| For Hose ID | For Hole Dia. | For Max. Wall Thick. | Pkg. Qty. | Pkg. | |
Brass | |||||
|---|---|---|---|---|---|
| 1/8" | 5/32" | 3/16" | 1 | 00000000 | 000000 |
| 3/16" | 5/32" | 9/32" | 1 | 00000000 | 00000 |
| 1/4" | 3/8" | 9/32" | 1 | 00000000 | 00000 |
| 5/16" | 7/16" | 9/32" | 1 | 00000000 | 00000 |
| 3/8" | 1/2" | 9/32" | 1 | 00000000 | 00000 |
| 1/2" | 5/8" | 15/32" | 1 | 00000000 | 00000 |
| 5/8" | 3/4" | 9/16" | 1 | 00000000 | 00000 |
| 3/4" | 1" | 3/4" | 1 | 00000000 | 00000 |
| 1" | 1 1/4" | 3/4" | 1 | 00000000 | 00000 |
303 Stainless Steel | |||||
| 1/8" | 5/32" | 3/16" | 1 | 0000000 | 00000 |
| 3/16" | 5/32" | 9/32" | 1 | 00000000 | 00000 |
| 1/4" | 3/8" | 9/32" | 1 | 00000000 | 00000 |
| 5/16" | 7/16" | 9/32" | 1 | 00000000 | 00000 |
| 3/8" | 1/2" | 9/32" | 1 | 00000000 | 00000 |
| 1/2" | 5/8" | 15/32" | 1 | 00000000 | 00000 |
| 5/8" | 3/4" | 9/16" | 1 | 00000000 | 00000 |
| 3/4" | 1" | 3/4" | 1 | 00000000 | 000000 |
| 1" | 1 1/4" | 3/4" | 1 | 00000000 | 000000 |