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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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. 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: ASME B16.9, ASTM A403, MSS SP-43
- Pipe: Use Schedule 10 stainless steel
Low-Pressure Iron and Steel Threaded Pipe Fittings
Use these fittings for low-pressure applications in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class: 150
- Specifications Met: ASME B16.3, UL Listed, ASME B1.20.1
- Pipe Nipples and Pipe: Use Schedule 40 steel
Standard-Wall Butt-Weld Steel Unthreaded Pipe Fittings
Butt-weld fittings allow for a smooth connection that provides maximum flow. They have beveled ends that, when flush to pipe, create a trough for a strong, permanent weld. Fittings are also known as Schedule 40. They are for use in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234, ASME B16.9
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 steel
Pipe Size | Wall Thick. | Construction | Each | |
| 10 | 0.365" | Seamless | 000000000 | 0000000 |
High-Pressure Brass Threaded Pipe Fittings with Sealant
Not only do these fittings have the strength to handle high-pressure applications, the male threads have a sealant applied for extra protection against leaks. Fittings are brass for good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
High-Pressure Plated Brass Threaded Pipe Fittings
The plating on these brass fittings creates a shiny finish and provides extra protection in corrosive environments. Fittings have the strength to handle high-pressure applications.
Nickel-plated brass fittings provide better corrosion resistance than unplated brass fittings. Chrome-plated brass fittings have a mirror-like finish and provide better corrosion resistance than nickel- and black zinc-plated brass.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
Drain, Waste, and Vent ABS Pipe Fittings for Chemicals
These Schedule 40 fittings are an economical option for gravity-flow chemical waste systems. They are ABS plastic, which has excellent strength and impact resistance and good chemical resistance. Fittings meet ASTM D2661, ASTM D3311, ASTM D3965, and ASTM F1498 specifications and testing requirements for material quality and product dimensions.
Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with ABS cement (also known as solvent weld).
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local VOC (Volatile Organic Compounds) regulations.
For technical drawings and 3-D models, click on a part number.
- For Use With: Sodium Hydroxide
- Maximum Temperature: 180° F
- Specifications Met: ASTM D2661, ASTM D3311, ASTM D3965, ASTM F1498
- Pipe Nipples and Pipe: Use Schedule 40 ABS Plastic
- Flanges: Use Schedule 40 ABS Plastic
- For Use With: Sodium Hydroxide
- Maximum Temperature: 180° F
- Specifications Met: ASTM D2661, ASTM D3311, ASTM D3965, ASTM F1498
- Pipe Nipples and Pipe: Use Schedule 40 ABS Plastic
- Flanges: Use Schedule 40 ABS Plastic
| Pipe Size | Socket Dp. | OD | ID | Wall Thick. | Material | Color | Each | |
| 1 1/4 | 11/16" | 1 21/32" | 1.38" | 0.14" | ABS Plastic | Black | 00000000 | 00000 |
| 1 1/2 | 11/16" | 1 29/32" | 1.61" | 0.145" | ABS Plastic | Black | 00000000 | 0000 |
| 2 | 3/4" | 2 3/8" | 2.067" | 0.154" | ABS Plastic | Black | 00000000 | 0000 |
| 3 | 1 3/4" | 3 1/2" | 3.068" | 0.216" | ABS Plastic | Black | 00000000 | 00000 |
| 4 | 1 3/4" | 4 1/2" | 4.026" | 0.237" | ABS Plastic | Black | 00000000 | 00000 |
| Pipe Cement (8 fl. oz. Can) | 00000000 | Each | 00000 |
Drain, Waste, and Vent ABS Pipe Flanges for Chemicals
- For Use With: Sodium Hydroxide
- Max. Temperature: 180° F
- Specifications Met: ASTM D2661, ASTM D3311, ASTM D3965, ASTM F1498
- Pipe NIpples and Pipe: Use Schedule 40 ABS Plastic
- Fittings: Use Schedule 40 ABS Plastic
These Schedule 40 flanges are an economical choice for gravity-flow chemical waste systems. Flanges are ABS plastic, which has excellent strength and impact resistance and good chemical resistance. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. They have socket-connect ends that attach to unthreaded pipe or another socket-connect fitting with ABS cement (also known as solvent weld). They meet ASTM D2661, ASTM D3311, ASTM D3965, and ASTM F1498 specifications and testing requirements for material quality and product dimensions.
Warning: Never use plastic pipe flanges and pipe with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
Aboveground Standard-Wall PVC Pipe Flanges for Drain, Waste, and Vent
- For Use With: Water
- Max. Temperature: 140° F
- Specifications Met: ASTM D1784, ASTM D2665
- Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
- Fittings: Use Schedule 40 PVC Plastic
Also known as Schedule 40 flanges, these are the industry standard for gravity-flow drain, waste, and vent (DWV) applications. They are PVC for good corrosion resistance. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. They have socket-connect ends that attach to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld). Flanges meet ASTM D1784 and ASTM D2665 specifications and testing requirements for material quality.
Warning: Never use plastic pipe flanges and pipe with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
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 ASME BPE and 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.
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 Tube OD | Max. Pressure | Max. Vacuum | Length (A) | Wall Thick. | For Use With | Each | |
304/304L Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
Polished | |||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 5/8" | 0.065" | Dairy, Food | 00000000 | 000000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 15/16" | 0.065" | Dairy, Food | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 1 1/4" | 0.065" | Dairy, Food | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 1 9/16" | 0.065" | Dairy, Food | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 1 7/8" | 0.065" | Dairy, Food | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 2 1/2" | 0.083" | Dairy, Food | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 3 3/4" | 0.109" | Dairy, Food | 00000000 | 000000 |
Dull | |||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 5/8" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 15/16" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 1 1/4" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 1 9/16" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 1 7/8" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 2 1/2" | 0.083" | Air, Food, Water | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 3 3/4" | 0.109" | Air, Food, Water | 00000000 | 000000 |
316/316L Stainless Steel | |||||||
Polished | |||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 5/8" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 15/16" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 1 1/4" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 1 9/16" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 1 7/8" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 2 1/2" | 0.083" | Dairy, Food | 0000000 | 00000 |
Dull | |||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 5/8" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 15/16" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 1 1/4" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 1 7/8" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 2 1/2" | 0.083" | Air, Food, Water | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 3 3/4" | 0.109" | Air, Food, Water | 00000000 | 000000 |
| For Tube OD | Max. Pressure | Max. Vacuum | Lg. (A) | Wall Thick. | For Use With | Specifications Met | Each | |
304/304L Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
Polished | ||||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 3/16" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 000000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 5/8" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 2 5/16" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 3" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 3 11/16" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 4 13/16" | 0.083" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 6 3/4" | 0.109" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 000000 |
Dull | ||||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 3/16" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 5/8" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 2 5/16" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 3" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 3 11/16" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 4 13/16" | 0.083" | Air, Food, Water | __ | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | 6 3/4" | 0.109" | Air, Food, Water | __ | 00000000 | 000000 |
316/316L Stainless Steel | ||||||||
Polished | ||||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 3/16" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 5/8" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 2 5/16" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | 3" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 3 11/16" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | 4 13/16" | 0.083" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 000000 |
Dull | ||||||||
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 3/16" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | 1 5/8" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | 2 5/16" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | 3 11/16" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
Threaded Hose Fittings for Hydraulic Fluid
Fittings are threaded on both ends so you can connect them directly to a threaded hose or to pumps, cylinders, and other equipment in your hydraulic system.
Zinc-plated steel fittings are stronger and more durable than stainless steel fittings. They have fair corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Fittings that swivel until tightened rotate for easy installation.
NPTF (Dryseal) threads are compatible with NPT threads. NPSM (National Pipe Straight Mechanical) female threads are compatible with male NPT and NPTF threads.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Temperature Range:
Zinc-Plated Steel: Not Rated
316 Stainless Steel: -425° to 1200° F
