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 Stainless Steel Unthreaded Pipe Nipples and Pipe
Also known as Schedule 40, this pipe has a thicker wall than our thin-wall stainless steel unthreaded pipe. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak.
304 stainless steel pipe has very good corrosion resistance. 316 stainless steel pipe has excellent corrosion resistance. Welded pipe has a weld bead on the inside.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met:
Pipe 10" and shorter: ASTM 312
Pipe 1 ft. and longer: ASME B36.19, ASTM 312 - Fittings: Use Class 150 or Schedule 40 stainless steel
- Flanges: Use Schedule 40 stainless steel
304/304L Stainless Steel | 316/316L Stainless Steel | ||||
|---|---|---|---|---|---|
| Lg. | Wall Thick. | Each | Each | ||
1/8 Pipe Size  | |||||
| 1ft. | 0.068" | 000000000 | 000000 | 000000000 | 000000 |
| 3ft. | 0.068" | 000000000 | 00000 | 000000000 | 00000 |
| 6ft. | 0.068" | 000000000 | 00000 | 000000000 | 00000 |
1/4 Pipe Size | |||||
| 1ft. | 0.088" | 000000000 | 00000 | 000000000 | 00000 |
| 3ft. | 0.088" | 000000000 | 00000 | 000000000 | 00000 |
| 6ft. | 0.088" | 000000000 | 00000 | 000000000 | 00000 |
3/8 Pipe Size | |||||
| 1ft. | 0.091" | 000000000 | 00000 | 000000000 | 00000 |
| 3ft. | 0.091" | 000000000 | 00000 | 000000000 | 00000 |
| 6ft. | 0.091" | 000000000 | 00000 | 000000000 | 00000 |
1/2 Pipe Size | |||||
| 1ft. | 0.109" | 000000000 | 00000 | 000000000 | 00000 |
| 3ft. | 0.109" | 000000000 | 00000 | 000000000 | 00000 |
| 6ft. | 0.109" | 000000000 | 00000 | 000000000 | 00000 |
3/4 Pipe Size | |||||
| 1ft. | 0.113" | 000000000 | 00000 | 000000000 | 00000 |
| 3ft. | 0.113" | 000000000 | 00000 | 000000000 | 00000 |
| 6ft. | 0.113" | 000000000 | 00000 | 000000000 | 000000 |
1 Pipe Size | |||||
| 1ft. | 0.133" | 000000000 | 00000 | 000000000 | 00000 |
| 3ft. | 0.133" | 000000000 | 00000 | 000000000 | 000000 |
| 6ft. | 0.133" | 000000000 | 000000 | 000000000 | 000000 |
1 1/4 Pipe Size | |||||
| 1ft. | 0.14" | 000000000 | 00000 | 000000000 | 00000 |
| 3ft. | 0.14" | 000000000 | 00000 | 000000000 | 000000 |
| 6ft. | 0.14" | 000000000 | 000000 | 000000000 | 000000 |
1 1/2 Pipe Size | |||||
| 1ft. | 0.145" | 000000000 | 00000 | 000000000 | 00000 |
| 3ft. | 0.145" | 000000000 | 000000 | 000000000 | 000000 |
| 6ft. | 0.145" | 000000000 | 000000 | 000000000 | 000000 |
2 Pipe Size | |||||
| 1ft. | 0.154" | 000000000 | 00000 | 000000000 | 000000 |
| 3ft. | 0.154" | 000000000 | 000000 | 000000000 | 000000 |
| 6ft. | 0.154" | 000000000 | 000000 | 000000000 | 000000 |
2 1/2 Pipe Size | |||||
| 1ft. | 0.203" | 000000000 | 00000 | 000000000 | 000000 |
| 3ft. | 0.203" | 000000000 | 000000 | 000000000 | 000000 |
| 6ft. | 0.203" | 000000000 | 000000 | 000000000 | 000000 |
3 Pipe Size | |||||
| 1ft. | 0.216" | 000000000 | 000000 | 000000000 | 000000 |
| 3ft. | 0.216" | 000000000 | 000000 | 000000000 | 000000 |
| 6ft. | 0.216" | 000000000 | 000000 | 000000000 | 000000 |
4 Pipe Size | |||||
| 1ft. | 0.237" | 000000000 | 000000 | 000000000 | 000000 |
| 3ft. | 0.237" | 000000000 | 000000 | 000000000 | 000000 |
| 6ft. | 0.237" | 000000000 | 000000 | 000000000 | 000000 |
6 Pipe Size | |||||
| 1ft. | 0.28" | 000000000 | 000000 | 000000000 | 000000 |
| 3ft. | 0.28" | 000000000 | 000000 | 000000000 | 000000 |
| 6ft. | 0.28" | 000000000 | 000000 | 000000000 | 000000 |
8 Pipe Size | |||||
| 1ft. | 0.322" | 000000000 | 000000 | 000000000 | 000000 |
| 3ft. | 0.322" | 000000000 | 000000 | 000000000 | 000000 |
| 6ft. | 0.322" | 000000000 | 00000000 | 000000000 | 00000000 |
Thin-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASTM A312, ASME B36.19
- Fittings: Use unthreaded Schedule 10 stainless steel
Also known as Schedule 10, this pipe is thin and lightweight. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak. Pipe has a welded construction, so there is a weld bead on the inside.
304 stainless steel pipe has very good corrosion resistance. 316 stainless steel pipe has excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
304/304L Stainless Steel | 316/316L Stainless Steel | |||||
|---|---|---|---|---|---|---|
| Lg. | Wall Thick. | Construction | Each | Each | ||
1/2 Pipe Size | ||||||
| 2" | 0.083" | Welded | 00000000 | 00000 | 000000 | 00 |
| 4" | 0.083" | Welded | 00000000 | 0000 | 000000 | 00 |
| 6" | 0.083" | Welded | 00000000 | 0000 | 000000 | 00 |
| 8" | 0.083" | Welded | 00000000 | 00000 | 000000 | 00 |
| 1ft. | 0.083" | Welded | 00000000 | 00000 | 00000000 | 000000 |
| 3ft. | 0.083" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 6ft. | 0.083" | Welded | 0000000 | 00000 | 0000000 | 00000 |
3/4 Pipe Size | ||||||
| 2" | 0.083" | Welded | 00000000 | 0000 | 000000 | 00 |
| 4" | 0.083" | Welded | 00000000 | 0000 | 000000 | 00 |
| 6" | 0.083" | Welded | 00000000 | 00000 | 000000 | 00 |
| 8" | 0.083" | Welded | 00000000 | 00000 | 000000 | 00 |
| 1ft. | 0.083" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.083" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 6ft. | 0.083" | Welded | 0000000 | 00000 | 0000000 | 00000 |
1 Pipe Size | ||||||
| 2" | 0.109" | Welded | 00000000 | 0000 | 0000000 | 0000 |
| 4" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 6" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 8" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 1ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 6ft. | 0.109" | Welded | 0000000 | 00000 | 0000000 | 000000 |
1 1/4 Pipe Size | ||||||
| 2" | 0.109" | Welded | 00000000 | 0000 | 000000 | 00 |
| 4" | 0.109" | Welded | 00000000 | 00000 | 000000 | 00 |
| 6" | 0.109" | Welded | 00000000 | 00000 | 000000 | 00 |
| 8" | 0.109" | Welded | 00000000 | 00000 | 000000 | 00 |
| 1ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 6ft. | 0.109" | Welded | 0000000 | 000000 | 0000000 | 000000 |
1 1/2 Pipe Size | ||||||
| 2" | 0.109" | Welded | 00000000 | 0000 | 0000000 | 00000 |
| 4" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 6" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 8" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 1ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 000000 |
| 6ft. | 0.109" | Welded | 0000000 | 000000 | 0000000 | 000000 |
2 Pipe Size | ||||||
| 4" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 6" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 8" | 0.109" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 1ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.109" | Welded | 00000000 | 00000 | 00000000 | 000000 |
| 6ft. | 0.109" | Welded | 0000000 | 000000 | 0000000 | 000000 |
2 1/2 Pipe Size | ||||||
| 4" | 0.12" | Welded | 00000000 | 00000 | 000000 | 00 |
| 6" | 0.12" | Welded | 00000000 | 00000 | 000000 | 00 |
| 8" | 0.12" | Welded | 00000000 | 00000 | 000000 | 00 |
| 1ft. | 0.12" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.12" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 6ft. | 0.12" | Welded | 0000000 | 000000 | 0000000 | 000000 |
3 Pipe Size | ||||||
| 4" | 0.12" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 6" | 0.12" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 8" | 0.12" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 1ft. | 0.12" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.12" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 6ft. | 0.12" | Welded | 0000000 | 000000 | 0000000 | 000000 |
4 Pipe Size | ||||||
| 4" | 0.12" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 6" | 0.12" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 8" | 0.12" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 1ft. | 0.12" | Welded | 00000000 | 00000 | 00000000 | 00000 |
| 3ft. | 0.12" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 6ft. | 0.12" | Welded | 0000000 | 000000 | 0000000 | 000000 |
6 Pipe Size | ||||||
| 4" | 0.134" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 6" | 0.134" | Welded | 00000000 | 00000 | 0000000 | 00000 |
| 8" | 0.134" | Welded | 00000000 | 00000 | 0000000 | 000000 |
| 1ft. | 0.134" | Welded | 00000000 | 00000 | 00000000 | 000000 |
| 3ft. | 0.134" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 6ft. | 0.134" | Welded | 0000000 | 000000 | 0000000 | 000000 |
8 Pipe Size | ||||||
| 4" | 0.148" | Welded | 00000000 | 00000 | 000000 | 00 |
| 6" | 0.148" | Welded | 00000000 | 00000 | 000000 | 00 |
| 8" | 0.148" | Welded | 00000000 | 00000 | 000000 | 00 |
| 1ft. | 0.148" | Welded | 00000000 | 00000 | 00000000 | 000000 |
| 3ft. | 0.148" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 6ft. | 0.148" | Welded | 00000000 | 000000 | 00000000 | 000000 |
10 Pipe Size | ||||||
| 4" | 0.165" | Welded | 00000000 | 00000 | 000000 | 00 |
| 6" | 0.165" | Welded | 00000000 | 00000 | 000000 | 00 |
| 8" | 0.165" | Welded | 00000000 | 00000 | 000000 | 00 |
| 1ft. | 0.165" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 3ft. | 0.165" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 6ft. | 0.165" | Welded | 00000000 | 000000 | 00000000 | 000000 |
12 Pipe Size | ||||||
| 1ft. | 0.18" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 3ft. | 0.18" | Welded | 00000000 | 000000 | 00000000 | 000000 |
| 6ft. | 0.18" | Welded | 00000000 | 000000 | 00000000 | 000000 |
Medium-Pressure Clamp-On Connectors
Create quick, liquid-tight connections in medium-pressure applications with these connectors. They join rigid pipe of the same or different materials. Connectors have a gasket that permits moderate movement and misalignment of pipe ends.
Compression connectors slide onto pipe and hand tighten with the end nuts. You may need to tighten over time. These connectors have a Buna-N rubber gasket that resists oil, as well as mild chemicals and water. Replace the gasket when it’s worn out, or swap it out for a gasket with different properties. Silicone rubber gaskets resist temperature changes better than Buna-N rubber gaskets, and also keep their flexibility. Viton® fluoroelastomer rubber gaskets resist extreme heat, as well as chemicals, fuel, and oil. 304 stainless steel connectors have very good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water
- Temperature Range: -60° to 260° F
- Specifications Met: ASME B36.19, ASTM A312
- For Pipe Material: Stainless Steel, Steel, Aluminum, CPVC Plastic
| For Pipe OD | For Pipe Size | Lg. | Pipe Connection Type | Max. Pressure | Gasket Material | Each | |
| 0.84" | 1/2 | 3 1/2" | Compression | 200 psi @ 72° F | Buna-N Rubber | 00000000 | 000000 |
| 1.05" | 3/4 | 3 1/2" | Compression | 200 psi @ 72° F | Buna-N Rubber | 00000000 | 000000 |
| 1.315" | 1 | 3 5/8" | Compression | 200 psi @ 72° F | Buna-N Rubber | 00000000 | 000000 |
| 1.66" | 1 1/4 | 3 5/8" | Compression | 200 psi @ 72° F | Buna-N Rubber | 00000000 | 000000 |
| 1.9" | 1 1/2 | 4" | Compression | 200 psi @ 72° F | Buna-N Rubber | 00000000 | 000000 |
| 2 3/8" | 2 | 4 5/16" | Compression | 200 psi @ 72° F | Buna-N Rubber | 00000000 | 000000 |
| For Pipe Size | Temperature Range, °F | Gasket Clarity | Gasket Color | Each | |
Buna-N Rubber | |||||
|---|---|---|---|---|---|
| 1/2 | -60° to 260° | Opaque | Black | 00000000 | 00000 |
| 3/4 | -60° to 260° | Opaque | Black | 00000000 | 0000 |
| 1 | -60° to 260° | Opaque | Black | 00000000 | 00000 |
| 1 1/4 | -60° to 260° | Opaque | Black | 00000000 | 00000 |
| 1 1/2 | -60° to 260° | Opaque | Black | 00000000 | 00000 |
| 2 | -60° to 260° | Opaque | Black | 00000000 | 00000 |
Silicone Rubber | |||||
| 1/2 | -180° to 400° | Opaque | Orange | 00000000 | 0000 |
| 3/4 | -180° to 400° | Opaque | Orange | 00000000 | 00000 |
| 1 | -180° to 400° | Opaque | Orange | 00000000 | 00000 |
| 1 1/4 | -180° to 400° | Opaque | Orange | 00000000 | 00000 |
| 1 1/2 | -180° to 400° | Opaque | Orange | 00000000 | 00000 |
| 2 | -180° to 400° | Opaque | Orange | 00000000 | 00000 |
Viton® Fluoroelastomer Rubber | |||||
| 3/4 | -40° to 500° | Opaque | Brown | 00000000 | 00000 |
| 1 | -40° to 500° | Opaque | Brown | 00000000 | 00000 |
| 1 1/4 | -40° to 500° | Opaque | Brown | 00000000 | 00000 |
| 1 1/2 | -40° to 500° | Opaque | Brown | 00000000 | 00000 |
| 2 | -40° to 500° | Opaque | Brown | 00000000 | 00000 |