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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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. Nickel-plated brass fittings resist corrosion better than plain brass fittings.
Aluminum fittings are lighter in weight than other metal fittings. They 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. Fittings with a threaded end are also known as hose nipples.
Metric, UN/UNF (SAE Straight), and BSPP male threads with gasket protect against leaks.
For technical drawings and 3-D models, click on a part number.

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Pipe Size | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Specifications Met | Pkg. Qty. | Pkg. | |
Brass | |||||||||
---|---|---|---|---|---|---|---|---|---|
19mm | 1/2 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 000000 |
19mm | 3/4 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -40° to 160° | Worm-Drive Clamp | SAE J476 | 1 | 0000000 | 00000 |
19mm | 1 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 1 1/2 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
Aluminum | |||||||||
19mm | 1/2 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -20° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 1 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -20° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 1 1/2 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -20° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
303 Stainless Steel | |||||||||
19mm | 1/4 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 1/2 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 3/4 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 1 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 1 1/2 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |


UN/UNF (SAE Straight)
Male Threads with Gasket
- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: Bronze Fittings: ASTM B584
For Hose ID | Pipe Size | Gasket Material | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | |||||||||
---|---|---|---|---|---|---|---|---|---|
19mm | 1/4 | Buna-N Rubber | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |
19mm | 1/2 | Buna-N Rubber | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 3/4 | Buna-N Rubber | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 1 | Buna-N Rubber | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
Nickel-Plated Brass | |||||||||
19mm | 1/2 | Buna-N Rubber | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
Aluminum | |||||||||
19mm | 3/4 | Buna-N Rubber | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
303 Stainless Steel | |||||||||
19mm | 3/4 | Buna-N Rubber | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 1 | Buna-N Rubber | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Pipe Size | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Specifications Met | Pkg. Qty. | Pkg. | |
Brass | |||||||||
---|---|---|---|---|---|---|---|---|---|
19mm | 3/4 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -40° to 160° | Worm-Drive Clamp, Crimp-On Hose Ferrule | SAE J476 | 1 | 0000000 | 000000 |
19mm | 1 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
303 Stainless Steel | |||||||||
19mm | 1/2 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | 1 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |


UN/UNF (SAE Straight)
Male Threads with Gasket
- Maximum Pressure: See table
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Thread Size | Gasket Material | Max. Pressure | Temperature Range, °F | Attachment Type | Specifications Met | Pkg. Qty. | Pkg. | |
Brass | |||||||||
---|---|---|---|---|---|---|---|---|---|
19mm | M12 × 1.5 mm | __ | 250 psi @ 72° F | -40° to 160° | Worm-Drive Clamp, Crimp-On Hose Ferrule | SAE J476 | 1 | 0000000 | 000000 |
19mm | M20 × 1.5 mm | Buna-N Rubber | 250 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
19mm | M22 × 1.5 mm | Buna-N Rubber | 250 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
Aluminum | |||||||||
19mm | M20 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |
303 Stainless Steel | |||||||||
19mm | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 00000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Pipe Size | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | ||||||||
---|---|---|---|---|---|---|---|---|
19mm | 1/2 | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |
19mm | 3/4 | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 1 | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 1 1/2 | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
Aluminum | ||||||||
19mm | 1 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -20° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
303 Stainless Steel | ||||||||
19mm | 1/4 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 1/2 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 3/4 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 1 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 1 1/2 | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |

- Maximum Pressure: See table
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Pipe Size | Max. Pressure | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | |||||||
---|---|---|---|---|---|---|---|
19mm | 3/4 | 300 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |
19mm | 1 | 300 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | ||||||||
---|---|---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | ||||||||
19mm | 9mm | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |
19mm | 16mm | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 18mm | 300 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
Aluminum | ||||||||
19mm | 8mm | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
19mm | 12mm | 125 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
Plastic Barbed Hose Fittings for Water
Made of polypropylene, these fittings have good corrosion and abrasion resistance, and are lighter in weight than metal barbed hose fittings. Slide the barbed end into plastic or rubber hose and secure with a clamp.
Fittings with a threaded end are also known as hose nipples.
For technical drawings and 3-D models, click on a part number.

(Continuous Swivel),
Hose × Female Threaded Pipe
- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 35° to 190° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps

- Maximum Pressure: Inch: 150 psi @ 72° F; Metric 200 psi @ 72° F
- Temperature Range: Inch: 10° to 150° F; Metric: 35° to 190° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
Metal Barbed Hose Fittings for Chemicals and Petroleum
Made of stainless steel, these fittings stand up to a wide variety of chemicals, as well as fuels, gasoline, and oils. To connect, slide the barbed end into plastic or rubber hose and secure with a clamp.
Adapters are also known as hose nipples; they adapt a barbed end to a threaded end.
Metric and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks.
For technical drawings and 3-D models, click on a part number.

- For Use With: See table
- Maximum Pressure: See table
- Temperature Range: See table
- Attachment Type: Use Band-and-Buckle Clamps
For Hose ID | Pipe Size | Max. Pressure | Temperature Range, °F | For Use With | Each | |
316 Stainless Steel | ||||||
---|---|---|---|---|---|---|
19mm | 3/4 | 300 psi @ 72° F | -40° to 300° | Acetone, Boric Acid, Citric Acid, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 000000 |

- For Use With: See table
- Maximum Pressure: See table
- Temperature Range: -40° to 300° F
- Attachment Type: Use Band-and-Buckle Clamps
For Hose ID | Pipe Size | Max. Pressure | For Use With | Each | |
316 Stainless Steel | |||||
---|---|---|---|---|---|
19mm | 3/4 | 250 psi @ 72° F | Acetone, Boric Acid, Citric Acid, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 000000 |
19mm | 1 | 300 psi @ 72° F | Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 00000 |

- For Use With: See table
- Maximum Pressure: See table
- Temperature Range: -40° to 300° F
- Attachment Type: Use Band-and-Buckle Clamps
Thread | |||||||
---|---|---|---|---|---|---|---|
For Hose ID | Size | Pitch, mm | Gasket Material | Max. Pressure | For Use With | Each | |
316 Stainless Steel | |||||||
19mm | M12 | 1.5 | Viton® Fluoroelastomer Rubber | 250 psi @ 72° F | Acetone, Boric Acid, Citric Acid, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 000000 |
19mm | M16 | 1.5 | Fluoroelastomer Rubber | 125 psi @ 72° F | Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 00000 |
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. 303 Stainless steel fittings have very good corrosion resistance, so they’re the best choice for high-humidity environments.
Fittings with a barbed end are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose. Fittings with a clamp-on barbed end slide into hose and secure with a clamp.
For technical drawings and 3-D models, click on a part number.

- Attachment Type: Use Worm-Drive Clamps
Barbed Hose Fittings for Coolant
Fittings have a barbed end that slides into rubber hose and secures with a clamp. All are nylon, which is lightweight with excellent impact and abrasion resistance. They have good corrosion resistance.
Fittings with a threaded pipe connection are also known as hose nipples. They adapt a barbed end to a threaded end.
For technical drawings and 3-D models, click on a part number.

- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 0° to 230° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
For Hose ID, mm | Pipe Size | Color | Each | |
Nylon Plastic | ||||
---|---|---|---|---|
19 | 1 | Blue | 00000000 | 00000 |


- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 0° to 230° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
For Hose ID, mm | Pipe Size | Color | Gasket Required | Features | Each | |
Nylon Plastic | ||||||
---|---|---|---|---|---|---|
19 | 3/4 | Blue | No | Connical Seat | 00000000 | 00000 |

- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 0° to 230° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
For Hose ID | ||||
---|---|---|---|---|
A | B | Color | Each | |
Nylon Plastic | ||||
19mm | 14mm | Blue | 00000000 | 00000 |

- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 0° to 230° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps

- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 0° to 230° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
For Hose ID | Color | Each | |
Nylon Plastic | |||
---|---|---|---|
19mm | Blue | 00000000 | 00000 |

- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 0° to 230° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
For Hose ID | Color | Each | |
Nylon Plastic | |||
---|---|---|---|
19mm | Blue | 00000000 | 00000 |

- Maximum Pressure: 200 psi @ 72° F
- Temperature Range: 0° to 230° F
- Attachment Type: Use Worm-Drive Clamps or Bolt Clamps
For Hose ID | ||||
---|---|---|---|---|
A | B | Color | Each | |
Nylon Plastic | ||||
19mm | 16mm | Blue | 00000000 | 00000 |