Connection Style Connection Style |
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| Butt Weld |
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| Push to Connect |
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| Threaded |
Material Material |
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For Pipe Material For Pipe Material |
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Wall Thickness Wall Thickness |
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Specifications Met Specifications Met |
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ID ID |
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For Tube Material For Tube Material |
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Maximum Pressure Maximum Pressure |
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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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Standard-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings
Also known as Schedule 40 fittings, these have thicker walls than our thin-wall stainless steel unthreaded butt-weld fittings. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASTM A403/A403M, MSS SP-43, ANSI/ASME B16.9
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
304/304L Stainless Steel | 316/316L Stainless Steel | ||||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Wall Thick. | Lg. | Construction | Each | Each | ||
| 1/2 | 0.109" | 1 1/2" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 3/4 | 0.113" | 1 1/2" | Welded | 000000000 | 0000 | 000000000 | 0000 |
| 1 | 0.133" | 1 1/2" | Welded | 000000000 | 0000 | 000000000 | 00000 |
| 1 1/4 | 0.14" | 1 7/8" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2 | 0.145" | 2 1/4" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 2 | 0.154" | 3" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 2 1/2 | 0.203" | 3 3/4" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 3 | 0.216" | 4 1/2" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 4 | 0.237" | 6" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 6 | 0.28" | 9" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 8 | 0.322" | 12" | Welded | 000000000 | 000000 | 000000000 | 000000 |
Thin-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings
Also known as Schedule 10 fittings, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASTM A403/A403M, MSS SP-43, ANSI/ASME B16.9
- Pipe: Use Schedule 10 stainless steel
304/304L Stainless Steel | 316/316L Stainless Steel | ||||||
|---|---|---|---|---|---|---|---|
| Pipe Size | Wall Thick. | Lg. | Construction | Each | Each | ||
| 1/2 | 0.083" | 1 1/2" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 3/4 | 0.083" | 1 1/2" | Welded | 000000000 | 0000 | 000000000 | 0000 |
| 1 | 0.109" | 1 1/2" | Welded | 000000000 | 0000 | 000000000 | 0000 |
| 1 1/4 | 0.109" | 1 7/8" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2 | 0.109" | 2 1/4" | Welded | 000000000 | 0000 | 000000000 | 00000 |
| 2 | 0.109" | 3" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 2 1/2 | 0.12" | 3 3/4" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 3 | 0.12" | 4 1/2" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 4 | 0.12" | 6" | Welded | 000000000 | 00000 | 000000000 | 00000 |
| 6 | 0.134" | 9" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 8 | 0.148" | 12" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 10 | 0.165" | 15" | Welded | 000000000 | 000000 | 000000000 | 000000 |
| 12 | 0.18" | 18" | Welded | 000000000 | 000000 | 000000000 | 000000 |
Thick-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings
With a thicker wall than our standard-wall butt-weld pipe fittings, these offer high strength while providing a smooth connection for maximum flow. They have beveled ends that, when flush to pipe, create a trough for a leak-resistant, permanent weld.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water, Steam
- Specifications Met: ASTM A403/A403M
- Pipe Nipples and Pipe: Use Schedule 80 stainless steel
- Fittings: Use Class 300 or 600 stainless steel
Butt-Weld Fittings for Stainless Steel Tubing
- For Use With: See table
- Max. Temperature: 250° F, except hose fittings are unrated.
- Tubing:
304 Stainless Steel: Use with 304/304L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270
316 Stainless Steel: Use with 316/316L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270 - Specifications Met: See table
Weld these fittings to tubing for a permanent, flush connection that permits smooth flow through a line.
316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
316/316L Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| For Tube OD | Max. Pressure | Max. Vacuum | Lg. | Wall Thick. | For Use With | Specifications Met | Each | |
Polished | ||||||||
| 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 0000000 |
| 3/4" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 1" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 1 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 2" | 270 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 2 1/2" | 220 psi @ 72° F | 10 -6 torr @ 72° F | 18" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 3" | 170 psi @ 72° F | 10 -6 torr @ 72° F | 18" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 4" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 18" | 0.083" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 6" | 60 psi @ 72° F | 10 -6 torr @ 72° F | 24" | 0.109" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 00000000 |
Dull | ||||||||
| 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 3/4" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 1" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 1 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 2" | 270 psi @ 72° F | 10 -6 torr @ 72° F | 12" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 2 1/2" | 220 psi @ 72° F | 10 -6 torr @ 72° F | 18" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 3" | 170 psi @ 72° F | 10 -6 torr @ 72° F | 18" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 4" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 18" | 0.083" | Air, Food, Water | __ | 00000000 | 000000 |
| 6" | 60 psi @ 72° F | 10 -6 torr @ 72° F | 24" | 0.109" | Air, Food, Water | __ | 00000000 | 00000000 |
316/316L Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| For Tube OD | Max. Pressure | Max. Vacuum | Lg. (A) | Wall Thick. | For Use With | Specifications Met | Each | |
Polished | ||||||||
| 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 0000000 |
| 3/4" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 1" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 1 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 2" | 270 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 2 1/2" | 220 psi @ 72° F | 10 -6 torr @ 72° F | 7 7/16" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 3" | 170 psi @ 72° F | 10 -6 torr @ 72° F | 7 7/16" | 0.065" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 4" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 7 7/16" | 0.083" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
| 6" | 60 psi @ 72° F | 10 -6 torr @ 72° F | 9 15/16" | 0.109" | Dairy, Food | 3-A Certified 63-03 | 00000000 | 000000 |
Dull | ||||||||
| 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 3/4" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 1" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 1 1/2" | 300 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 2" | 270 psi @ 72° F | 10 -6 torr @ 72° F | 4 15/16" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 2 1/2" | 220 psi @ 72° F | 10 -6 torr @ 72° F | 7 7/16" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 3" | 170 psi @ 72° F | 10 -6 torr @ 72° F | 7 7/16" | 0.065" | Air, Food, Water | __ | 00000000 | 000000 |
| 4" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 7 7/16" | 0.083" | Air, Food, Water | __ | 00000000 | 000000 |
| 6" | 60 psi @ 72° F | 10 -6 torr @ 72° F | 9 15/16" | 0.109" | Air, Food, Water | __ | 00000000 | 000000 |
Stainless Steel Push-to-Connect
Tube Fittings for Air and Water
UN/UNF (SAE)
Male Threads with Gasket
- Temperature Range: -10° to 300° F,
except ISO 14743 fittings: 5° to 390° F - Tubing: Use with firm or hard (Durometer 95A-72D) nylon plastic or polyurethane rubber,
except ISO 14743 fittings: Use with firm (Durometer 85A-100A) nylon plastic or polyurethane rubber
Made entirely of stainless steel, these fittings have the best corrosion resistance of all our metal push-to-connect fittings. 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.
For technical drawings and 3-D models, click on a part number.
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
| For Tube OD | Pipe Size | Material | Max. Pressure | Each | |
NPT Threads | |||||
|---|---|---|---|---|---|
| 10mm | 1/4 | 316 Stainless Steel | 435 psi @ 72° F | 000000000 | 000000 |
UN/UNF (SAE)
Male Threads with Gasket
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
| For Tube OD, mm | Pipe Size | Thread Size | Material | Gasket Material | Max. Pressure | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 6 | 1/4 | __ | 316 Stainless Steel | __ | 435 psi @ 72° F | 000000000 | 000000 |
Metric Threads | |||||||
| 4 | __ | M5 | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
| 6 | __ | M5 | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
BSPP Threads | |||||||
| 4 | 1/8 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
| 6 | 1/8 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
| 6 | 1/4 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
| 8 | 1/8 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
| 8 | 1/4 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
| 8 | 3/8 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 000000 |
| 10 | 1/4 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 00000 |
| 10 | 3/8 | __ | 316 Stainless Steel | Fluoroelastomer Rubber | 435 psi @ 72° F | 000000000 | 000000 |