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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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Compression Fittings for Stainless Steel Tubing
A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings or bite fittings. Use them in low- to medium-pressure applications.
316 stainless steel fittings have excellent corrosion resistance.
ISO and DIN fittings meet international dimensional standards.
Straight Adapters, Tube × Male Threaded Pipe
- For Use With:
303 Stainless Steel, 316 Stainless Steel with 17-4 PH Stainless Steel Sleeve, and 360 Brass: Air, Water, Hydraulic Fluid
316 Stainless Steel: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water - Temperature Range: See table
- Tubing: See table
- Specifications Met:
316 Stainless Steel: ISO 8434, DIN 2353
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: SAE J514
For Tube | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size  | Material | Gasket Material | Sleeve Material | Max. Pressure | Temp. Range, °F | For Tube Material | For Tube Specifications Met | For Tube Fabrication | Each | |
NPT Threads | ||||||||||||
| 28mm | 1.5-2mm | 1 | 316 Stainless Steel | __ | 316 Stainless Steel | 2,300 psi @ 72° F | -75° to 750° | 304 Stainless Steel, 316/316L/316Ti Stainless Steel | DIN EN 10216-5, DIN EN 10305-1 | Seamless | 00000000 | 000000 |
BSPP Threads | ||||||||||||
| 28mm | 1.5-2mm | 1 | 316 Stainless Steel | Fluoroelastomer Rubber | 316 Stainless Steel | 3,600 psi @ 72° F | -10° to 390° | 304 Stainless Steel, 316/316L/316Ti Stainless Steel | DIN EN 10216-5, DIN EN 10305-1 | Seamless | 00000000 | 00000 |
Straight Connectors, Tube
- For Use With:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: Air, Water, Hydraulic Fluid
316 Stainless Steel: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water - Temperature Range:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: -420° to 1200° F
316 Stainless Steel: -75° to 750° F - Tubing:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A269
316 Stainless Steel: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1 - Specifications Met:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: SAE J514
316 Stainless Steel: ISO 8434, DIN 2353
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Sleeve Material | Max. Pressure | Each | |
| 28mm | 1.5-2mm | 316 Stainless Steel | 316 Stainless Steel | 3,600 psi @ 72° F | 0000000 | 0000000 |
90° Elbow Connectors, Tube
- For Use With:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: Air, Water, Hydraulic Fluid
316 Stainless Steel: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water - Temperature Range:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: -420° to 1200° F
316 Stainless Steel: -75° to 750° F - Tubing:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A269
316 Stainless Steel: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1 - Specifications Met:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: SAE J514
316 Stainless Steel: ISO 8434, DIN 2353
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Sleeve Material | Max. Pressure | Each | |
| 28mm | 1.5-2mm | 316 Stainless Steel | 316 Stainless Steel | 3,600 psi @ 72° F | 0000000 | 0000000 |
Nuts
- For Use With: See table
- Temperature Range: See table
- Tubing: See table
- Specifications Met: See table
For Tube | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | For Use With | Temp. Range, °F | For Tube Material | For Tube Specifications Met | For Tube Fabrication | Specifications Met | Each | |
| 28mm | 1.5-2mm | 316 Stainless Steel | 3,600 psi @ 72° F | Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water | -75° to 750° | 304 Stainless Steel, 316/316L/316Ti Stainless Steel | DIN EN 10216-5, DIN EN 10305-1 | Seamless | DIN 2353, ISO 8434-1 | 0000000 | 000000 |
Sleeves
- For Use With:
17-4 PH Stainless Steel: Air, Hydraulic Fluid, Water
316 Stainless Steel: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water - Temperature Range:
17-4 PH Stainless Steel: -420° to 1200° F
316 Stainless Steel: -75° to 750° F - Tubing:
17-4 PH Stainless Steel: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A269
316 Stainless Steel: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1 - Specifications Met:
17-4 PH Stainless Steel: SAE J514
316 Stainless Steel: ISO 8434-1, DIN 2353
For Tube | |||||
|---|---|---|---|---|---|
| OD | Wall Thick. | Sleeve Material | Max. Pressure | Each | |
| 28mm | 1.5-2mm | 316 Stainless Steel | 3,600 psi @ 72° F | 0000000 | 00000 |
Solder-Connect Fittings for Copper Tubing
- Temperature Range: 32° to 200° F
Straight Connectors with Center Stop, Female Socket-Connect Tube
- For Use With: Drinking Water
- Tubing: See table
- Specifications Met: See table
Fittings with center stop have a small internal ridge that prevents the tubing from sliding all the way through the fitting.
Fittings that meet ASTM B379 comply with international standards for tube fitting specifications.
| For Tube OD | Material | Max. Pressure | For Copper Tube Type | Specifications Met | Each | |
| 28mm | Copper | 400 psi @ 72° F | M | ASTM B379, DVGW GW 8, EN 1057 | 00000000 | 00000 |
Compression Fittings for Steel Tubing
BSPP and UN/UNF
(SAE Straight) Male
Threads with Gasket
(SAE Straight) Male
Threads with Gasket
- For Use With: Inch: Air, Hydraulic Fluid, Water
Metric: Hydraulic Fluid - Tubing: Inch: Use with welded steel
Metric: Use with seamless steel - Specifications Met: Inch: SAE J514
Metric: ISO 8434, DIN 2353
A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless and bite fittings.
Zinc-plated steel fittings have fair corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads. BSPP male threads have either a gasket or a gasket and washer to prevent leaks. ISO 8434 (formerly DIN 2353) fittings meet international standards for tube fitting pressures.
Straight Adapters, Tube × Male Threaded Pipe
BSPP and UN/UNF
(SAE Straight) Male
Threads with Gasket
(SAE Straight) Male
Threads with Gasket
- Temperature Range: See table
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Pipe Size | Material | Gasket Material | Max. Pressure | Temp. Range, °F | Each | |
NPT Threads | ||||||||
| 28mm | __ | 1 | Zinc-Plated Steel | __ | 2,300 psi @ 72° F | -75° to 750° | 00000000 | 000000 |
NPTF Threads | ||||||||
| 28mm | Not Rated | 1 | Zinc-Plated Steel | __ | 2,300 psi @ 72° F | -20° to 230° | 00000000 | 00000 |
BSPP Threads | ||||||||
| 28mm | __ | 3/4 | Zinc-Plated Steel | Buna-N Rubber | 3,600 psi @ 72° F | -20° to 212° | 00000000 | 00000 |
| 28mm | Not Rated | 1 | Zinc-Plated Steel | Buna-N Rubber | 2,300 psi @ 72° F | -20° to 230° | 0000000 | 00000 |
Straight Connectors, Tube
- Temperature Range: See table
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Each | |
| 28mm | Not Rated | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 230° | 00000000 | 000000 |
90° Elbow Connectors, Tube
- Temperature Range: See table
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Each | |
| 28mm | Not Rated | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 230° | 00000000 | 000000 |
Tee Connectors, Tube
- Temperature Range: -20° to 230° F
For Tube | |||||
|---|---|---|---|---|---|
| OD, mm | Wall Thick. | Material | Max. Pressure | Each | |
| 28 | Not Rated | Zinc-Plated Steel | 2,300 psi @ 72° F | 00000000 | 0000000 |
Nuts
- Temperature Range: See table
| For Tube OD | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
| 28mm | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 230° | 00000000 | 000000 |
Sleeves
- Temperature Range: See table
| For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
| 28mm | Zinc-Plated Steel | 2,300 psi @ 72° F | -20° to 230° | 00000000 | 00000 |
Push-to-Connect Tube Fittings for Drinking Water
- Temperature Range: 35° to 150° F
- Tubing: See table
- Specifications Met: NSF/ANSI 61
Made of moisture-resistant acetal, these fittings won't absorb water and lose strength, even in high-humidity environments. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. All meet NSF/ANSI 61 for use in drinking water systems.
Straight Connectors, Tube
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| For Tube OD | Material | Color | Release Ring Color | Max. Pressure | Material | Each | |
| 28mm | Acetal Plastic | Black | Black | 150 psi @ 72° F | Nylon Plastic, Polyethylene Plastic | 00000000 | 000000 |
90° Elbow Connectors, Tube
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| For Tube OD | Material | Color | Release Ring Color | Max. Pressure | Material | Each | |
| 28mm | Acetal Plastic | Black | Black | 150 psi @ 72° F | Nylon Plastic, Polyethylene Plastic | 00000000 | 000000 |
Tee Connectors, Tube
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| For Tube OD | Material | Color | Release Ring Color | Max. Pressure | Material | Each | |
| 28mm | Acetal Plastic | Black | Black | 150 psi @ 72° F | Nylon Plastic, Polyethylene Plastic | 00000000 | 000000 |