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 Metal Tubing
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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.

- 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
For Hose ID | ||||
---|---|---|---|---|
(A) | (B) | Color | Each | |
Polypropylene Plastic | ||||
21mm | 17mm | Black | 00000000 | 00000 |

- 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
For Hose ID | ||||
---|---|---|---|---|
(A) | (B) | Color | Each | |
Polypropylene Plastic | ||||
21mm | 17mm | Black | 00000000 | 00000 |
Smooth-Bore Seamless Stainless Steel Tubing

Seamless construction with no weld bead gives this tubing an interior with unrestricted flow. It is stronger than welded tubing and can be flared without splitting.
316 stainless steel offers excellent corrosion resistance.
Tubing that meets ASTM specifications adheres to international standards for dimensions and materials.
- Temperature Range: -325° to 1500° F
- Bending Method: Tube Bender
- For Use With: Hydraulic Fluid, Oil, Water, Natural Gas, Air
- Compatible Tubing Fittings: see table
Smooth-Bore Seamless Steel Tubing

Seamless construction with no weld bead gives this tubing a smooth interior for unrestricted flow. It is stronger than welded tubing and can be flared without splitting. Do not use in corrosive environments.
- Temperature Range: See Table
- Bending Method: Tube Bender
- For Use With: Air, Hydraulic Fluid, Oil
- Compatible Tubing Fittings: Compression
OD, mm | Wall Thick., mm | ID, mm | Max. Pressure | Temperature Range, °F | Temper Rating | Specifications Met | Each | |
1 m | ||||||||
---|---|---|---|---|---|---|---|---|
Steel | ||||||||
25 | 2 | 21 | 2,800 psi @ 72° F | -5° to 570° | Soft | DIN 2391, DIN EN 10305-4 | 000000000 | 000000 |
Zinc-Plated Steel | ||||||||
25 | 2 | 21 | 2,300 psi @ 72° F | 68° to 240° | Soft | DIN 2391, DIN EN 10305-4 | 000000000 | 00000 |
2 m | ||||||||
Steel | ||||||||
25 | 2 | 21 | 2,800 psi @ 72° F | -5° to 570° | Soft | DIN 2391, DIN EN 10305-4 | 00000000 | 00000 |
Zinc-Plated Steel | ||||||||
25 | 2 | 21 | 2,300 psi @ 72° F | 68° to 240° | Soft | DIN 2391, DIN EN 10305-4 | 000000000 | 00000 |