How to Identify and Measure Fittings
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Easy-Fit Barbed Hose Fittings for Air and Water
Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into rubber hose and secure with a clamp.
Steel fittings are stronger and more durable than other metal fittings. They should be used in noncorrosive environments. Zinc-plated steel fittings have slightly better corrosion resistance than unplated steel fittings. Aluminum fittings are lighter in weight than other metal fittings. They have good corrosion resistance. Brass fittings are softer than other metal fittings, so they’re easier to thread together. They have good corrosion resistance.
Fittings with a threaded end are also known as hose nipples.
Fittings with a hex body can be tightened with a wrench.
Hose connectors are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose.
For technical drawings and 3-D models, click on a part number.


- Maximum Pressure: 125 psi @ 72° F, except For 5" to 8" Hose IDs: 100 psi @ 72° F
- Maximum Vacuum: For 1/2" to 4" Hose IDs: 26 in. of Hg @ 72° F
- Temperature Range: -20° to 200° F
- Attachment Type: Use Worm-Drive Clamps, Bolt Clamps or Band-and-Buckle Clamps
- Specifications Met: See table
For Hose ID | Pipe Size | Body Shape | Specifications Met | Each | |
Steel | |||||
---|---|---|---|---|---|
1/2" | 1/2 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
3/4" | 3/4 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
3/4" | 1 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1" | 3/4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1" | 1 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
1" | 1 1/4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/4" | 1 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/4" | 1 1/4 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
1 1/4" | 1 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/2" | 1 1/4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/2" | 1 1/2 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
1 1/2" | 2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2" | 1 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2" | 2 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
2" | 2 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2 1/2" | 2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2 1/2" | 2 1/2 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
2 1/2" | 3 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
3" | 2 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
3" | 3 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
3" | 4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
4" | 3 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
4" | 4 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
5" | 5 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
6" | 6 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 000000 |
8" | 8 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 000000 |
Zinc-Plated Steel | |||||
1/2" | 1/2 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
3/4" | 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
3/4" | 3/4 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
3/4" | 1 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1" | 3/4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1" | 1 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
1" | 1 1/4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/4" | 1 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/4" | 1 1/4 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
1 1/4" | 1 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/2" | 1 1/4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
1 1/2" | 1 1/2 | Hex | ASME B1.20.1, ASTM A53 | 0000000 | 0000 |
1 1/2" | 2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2" | 1 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2" | 2 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
2" | 2 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2 1/2" | 2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
2 1/2" | 2 1/2 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
2 1/2" | 3 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
3" | 2 1/2 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
3" | 3 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
3" | 4 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 000000 |
4" | 3 | Round | ASME B1.20.1, ASTM A53 | 00000000 | 000000 |
4" | 4 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
5" | 5 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
6" | 6 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 000000 |
8" | 8 | Round | ASME B1.20.1, ASTM A53 | 0000000 | 000000 |
Brass | |||||
1/2" | 1/2 | Round | ASME B1.20.1, ASTM B43 | 0000000 | 00000 |
3/4" | 3/4 | Hex | ASME B1.20.1, ASTM B43 | 0000000 | 00000 |
1" | 1 | Hex | ASME B1.20.1, ASTM B43 | 0000000 | 00000 |
1 1/4" | 1 1/4 | Hex | ASME B1.20.1, ASTM B43 | 0000000 | 00000 |
1 1/2" | 1 1/2 | Hex | ASME B1.20.1, ASTM B43 | 0000000 | 00000 |
2" | 2 | Round | ASME B1.20.1, ASTM B43 | 0000000 | 00000 |
2 1/2" | 2 1/2 | Round | ASME B1.20.1, ASTM B43 | 0000000 | 00000 |
3" | 3 | Round | ASME B1.20.1, ASTM B43 | 0000000 | 000000 |
4" | 4 | Round | ASME B1.20.1, ASTM B43 | 0000000 | 000000 |
Aluminum | |||||
1/2" | 1/2 | Round | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
3/4" | 3/4 | Hex | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
1" | 1 | Hex | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
1 1/4" | 1 1/4 | Hex | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
1 1/2" | 1 1/2 | Hex | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
2" | 2 | Round | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
2 1/2" | 2 1/2 | Round | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
3" | 3 | Round | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
4" | 4 | Round | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
6" | 6 | Round | ASME B1.20.1, ASTM B241 | 0000000 | 000000 |

- Maximum Pressure: 125 psi @ 72° F, except For 6" to 8" Hose IDs: 100 psi @ 72° F
- Maximum Vacuum: For 1/2" to 4" Hose IDs: 26 in. of Hg @ 72° F
- Temperature Range: -20° to 200° F
- Attachment Type: Use Worm-Drive Clamps, Bolt Clamps or Band-and-Buckle Clamps; except For 6" to 8" Hose IDs: Use Band-and-Buckle Clamps
- Specifications Met: See table
For Hose ID | Specifications Met | Each | |
Zinc-Plated Steel | |||
---|---|---|---|
1/2" | ASTM A53 | 00000000 | 00000 |
3/4" | ASTM A53 | 00000000 | 0000 |
1" | ASTM A53 | 00000000 | 0000 |
1 1/4" | ASTM A53 | 00000000 | 00000 |
1 1/2" | ASTM A53 | 00000000 | 00000 |
2" | ASTM A53 | 00000000 | 00000 |
2 1/2" | ASTM A53 | 00000000 | 00000 |
3" | ASTM A53 | 00000000 | 00000 |
4" | ASTM A53 | 00000000 | 00000 |
Brass | |||
3/4" | ASTM B43 | 00000000 | 00000 |
1" | ASTM B43 | 00000000 | 00000 |
1 1/4" | ASTM B43 | 00000000 | 00000 |
1 1/2" | ASTM B43 | 00000000 | 00000 |
2" | ASTM B43 | 00000000 | 00000 |
Tight-Seal Barbed Hose Fittings for Air and Water
Also known as ball-seat hose nipples, these fittings consist of a barbed shaft with a rounded end that sits inside a female threaded nut. When mated with a male threaded fitting, the rounded end presses tightly against the inside of the male threads for a better seal than a single-piece fitting. Once assembled, insert the barbed end into rubber hose and secure with a clamp or a crimp-on hose ferrule. The nut swivels until tightened for easy installation. Fittings are brass for good corrosion resistance.
NPSM (National Pipe Straight Mechanical) female threads are compatible with male NPT and NPTF (Dryseal) threads.
For technical drawings and 3-D models, click on a part number.


- Maximum Pressure: 250 psi @72° F
- Temperature Range: -40° to 160° F
- Attachment Type: Use Crimp-On Hose Ferrules, except For 1/2" to 3/4" Hose IDs: Use Band-and-Buckle Clamps
- Specifications Met: See table
For Hose ID | Pipe Size | Thread Type | Specifications Met | Pkg. Qty. | Pkg. | |
Brass | ||||||
---|---|---|---|---|---|---|
1/8" | 1/8 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 000000 |
3/16" | 1/8 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
3/16" | 1/4 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
1/4" | 1/8 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
1/4" | 1/4 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
1/4" | 3/8 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
5/16" | 1/4 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
5/16" | 3/8 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
3/8" | 1/4 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
3/8" | 3/8 | NPSM | ASME B1.20.1, SAE J476 | 5 | 00000000 | 00000 |
3/8" | 1/2 | NPSM | ASME B1.20.1, SAE J476 | 2 | 00000000 | 00000 |
1/2" | 3/8 | NPSM | ASME B1.20.1, SAE J476 | 2 | 00000000 | 00000 |
1/2" | 1/2 | NPSM | ASME B1.20.1, SAE J476 | 2 | 00000000 | 00000 |
3/4" | 3/4 | NPSM | ASME B1.20.1, SAE J476 | 2 | 00000000 | 00000 |
Easy-Fit Barbed Hose Fittings for Chemicals
Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into rubber hose and secure with a clamp. Fittings are 316 stainless steel, which has excellent corrosion resistance to withstand a variety of chemicals.
Adapters are also known as hose nipples; they adapt a barbed end to a threaded end. Adapters with a hex body can be tightened with a wrench.
Connectors are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose.
For technical drawings and 3-D models, click on a part number.


- For Use With: Acetone, Isopropyl Alcohol, Mineral Oil, Sodium Hydroxide
- Maximum Pressure: See table
- Maximum Vacuum: 26 in. of Hg @ 72° F
- Temperature Range: -20° to 200° F
- Attachment Type: Use Worm-Drive Clamps, Bolt Clamps or Band-and-Buckle Clamps
- Specifications Met: ASME B1.20.1, ASTM A312
For Hose ID | Pipe Size | Body Shape | Max. Pressure | Each | |
316 Stainless Steel | |||||
---|---|---|---|---|---|
1/2" | 1/2 | Round | 200 psi @ 72° F | 0000000 | 000000 |
3/4" | 1/2 | Round | 175 psi @ 72° F | 0000000 | 00000 |
3/4" | 3/4 | Hex | 175 psi @ 72° F | 0000000 | 00000 |
3/4" | 1 | Round | 175 psi @ 72° F | 0000000 | 00000 |
1" | 3/4 | Round | 150 psi @ 72° F | 0000000 | 00000 |
1" | 1 | Hex | 150 psi @ 72° F | 0000000 | 00000 |
1" | 1 1/4 | Round | 150 psi @ 72° F | 0000000 | 00000 |
1 1/4" | 1 | Round | 140 psi @ 72° F | 0000000 | 00000 |
1 1/4" | 1 1/4 | Hex | 140 psi @ 72° F | 0000000 | 00000 |
1 1/4" | 1 1/2 | Round | 140 psi @ 72° F | 0000000 | 00000 |
1 1/2" | 1 | Round | 130 psi @ 72° F | 0000000 | 00000 |
1 1/2" | 1 1/4 | Round | 130 psi @ 72° F | 0000000 | 00000 |
1 1/2" | 1 1/2 | Hex | 130 psi @ 72° F | 0000000 | 00000 |
1 1/2" | 2 | Round | 130 psi @ 72° F | 0000000 | 000000 |
2" | 1 1/4 | Round | 110 psi @ 72° F | 0000000 | 000000 |
2" | 1 1/2 | Round | 110 psi @ 72° F | 0000000 | 000000 |
2" | 2 | Round | 110 psi @ 72° F | 0000000 | 00000 |
2" | 2 1/2 | Round | 110 psi @ 72° F | 0000000 | 000000 |
2 1/2" | 2 | Round | 70 psi @ 72° F | 0000000 | 000000 |
2 1/2" | 2 1/2 | Round | 70 psi @ 72° F | 0000000 | 00000 |
3" | 3 | Round | 50 psi @ 72° F | 0000000 | 000000 |
4" | 4 | Round | 50 psi @ 72° F | 0000000 | 000000 |
5" | 5 | Round | 45 psi @ 72° F | 0000000 | 000000 |
6" | 6 | Round | 25 psi @ 72° F | 0000000 | 000000 |
8" | 8 | Round | 25 psi @ 72° F | 0000000 | 000000 |

- For Use With: Acetone, Isopropyl Alcohol, Mineral Oil, Sodium Hydroxide
- Maximum Pressure: 125 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
- Temperature Range: -20° to 200° F
- Attachment Type: Use Worm-Drive Clamps, Bolt Clamps or Band-and-Buckle Clamps
- Specifications Met: ASTM A312