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 Threaded Pipe Nipples and Pipe
Designed for low-pressure flow applications, this pipe is also known as Schedule 40.
304 stainless steel pipe offers very good corrosion resistance. 316 stainless steel pipe has excellent corrosion resistance.
Seamless pipe has a smooth interior for unrestricted flow and is stronger than welded pipe.
Welded pipe has a weld bead on the inside.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
For technical drawings and 3-D models, click on a part number.
NPT Fully Threaded—304/304L Stainless Steel
- For Use With: Natural Gas, Steam, Oil, Water, Air
- Specifications Met: ASTM A733, ASME B1.20.1
- Fittings: Use Class 150 stainless steel
- Flanges: Use Class 150 stainless steel
Pipe Size | Lg. | Construction | Each | |
| 1/8 | 3/4" | Seamless | 00000000 | 00000 |
| 1/4 | 7/8" | Seamless | 00000000 | 0000 |
| 3/8 | 1" | Seamless | 00000000 | 0000 |
| 1/2 | 1 1/8" | Welded | 00000000 | 0000 |
| 3/4 | 1 3/8" | Welded | 00000000 | 0000 |
| 1 | 1 1/2" | Welded | 00000000 | 0000 |
| 1 1/4 | 1 5/8" | Welded | 00000000 | 0000 |
| 1 1/2 | 1 3/4" | Welded | 00000000 | 0000 |
| 2 | 2" | Welded | 00000000 | 00000 |
| 2 1/2 | 2 1/2" | Welded | 00000000 | 00000 |
| 3 | 2 5/8" | Welded | 00000000 | 00000 |
| 4 | 2 7/8" | Welded | 00000000 | 00000 |
BSPT Fully Threaded—304/304L Stainless Steel
- For Use With: Natural Gas, Oil, Steam, Water, Air
- Specifications Met: ASTM A312
- Fittings: Use Class 150 stainless steel
- Flanges: Use Class 150 stainless steel
BSPT × NPT Fully Threaded—304/304L Stainless Steel
- For Use With: Natural Gas, Oil, Steam, Water, Air
- Specifications Met: ASTM A312
- Fittings: Use Class 150 stainless steel
- Flanges: Use Class 150 stainless steel
NPT Fully Threaded—316/316L Stainless Steel
- For Use With: Natural Gas, Steam, Oil, Water, Air
- Specifications Met: ASTM A733, ASME B1.20.1
- Fittings: Use Class 150 stainless steel
- Flanges: Use Class 150 stainless steel
| Pipe Size | Lg. | Construction | Each | |
| 1/8 | 3/4" | Seamless | 00000000 | 00000 |
| 1/4 | 7/8" | Seamless | 00000000 | 0000 |
| 3/8 | 1" | Seamless | 00000000 | 0000 |
| 1/2 | 1 1/8" | Welded | 00000000 | 0000 |
| 3/4 | 1 3/8" | Welded | 00000000 | 0000 |
| 1 | 1 1/2" | Welded | 00000000 | 0000 |
| 1 1/4 | 1 5/8" | Welded | 00000000 | 00000 |
| 1 1/2 | 1 3/4" | Welded | 00000000 | 00000 |
| 2 | 2" | Welded | 00000000 | 00000 |
| 2 1/2 | 2 1/2" | Welded | 00000000 | 00000 |
| 3 | 2 5/8" | Welded | 00000000 | 00000 |
| 4 | 2 7/8" | Welded | 00000000 | 00000 |
Standard-Wall Stainless Steel Threaded Pipe Nipple and Pipe Assortments
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Specifications Met: ASME B1.20.1, ASTM A733
- Fittings: Use Class 150 Stainless Steel
Keep a variety of lengths of pipe and pipe nipples on hand for areas where corrosion is a concern. These assortments have threaded pipe, which you can take apart as needed for maintenance and repair. They are designed for low-pressure applications. This pipe is welded, so it has a weld bead on the inside.
304 stainless steel has good corrosion resistance. 316 stainless steel has excellent corrosion resistance.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
| Pipe Size | No. of Pieces | Includes | Each | |
304/304L Stainless Steel | ||||
|---|---|---|---|---|
NPT Male | ||||
| 1/4 | 100 | 20 fully threaded 7/8" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 0000000 |
| 3/8 | 100 | 20 fully threaded 1" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 000000 |
| 1/2 | 66 | 6 fully threaded 1 1/8" Lg. nipples 60 threaded-on-both-ends nipples in the following lengths: 1 1/2” (6 ea.), 2” (6 ea.), 2 1/2” (6 ea.), 3” (6 ea.), 3 1/2” (6 ea.), 4” (6 ea.), 4 1/2” (6 ea.), 5” (6 ea.), 5 1/2" (6 ea.), 6" (6 ea.) | 00000000 | 000000 |
| 1/2 | 100 | 20 fully threaded 1 1/8" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 000000 |
| 3/4 | 66 | 6 fully threaded 1 3/8" Lg. nipples 60 threaded-on-both-ends nipples in the following lengths: 1 1/2” (6 ea.), 2” (6 ea.), 2 1/2” (6 ea.), 3” (6 ea.), 3 1/2” (6 ea.), 4” (6 ea.), 4 1/2” (6 ea.), 5” (6 ea.), 5 1/2" (6 ea.), 6" (6 ea.) | 00000000 | 000000 |
| 3/4 | 100 | 20 fully threaded 1 3/8" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 000000 |
| 1 | 30 | 3 fully threaded 1 1/2" Lg. nipples 27 threaded-on-both-ends nipples in the following lengths: 2” (3 ea.), 2 1/2” (3 ea.), 3” (3 ea.), 3 1/2” (3 ea.), 4” (3 ea.), 4 1/2” (3 ea.), 5” (3 ea.), 5 1/2” (3 ea.), 6" (3 ea.) | 00000000 | 000000 |
| 1 | 75 | 15 fully threaded 1 1/2" Lg. nipples 60 threaded-on-both-ends nipples in the following lengths: 2” (15 ea.), 2 1/2” (10 ea.), 3” (12 ea.), 3 1/2” (5 ea.), 4” (5 ea.), 4 1/2” (4 ea.), 5” (3 ea.), 5 1/2” (3 ea.), 6" (3 ea.) | 00000000 | 000000 |
| 1 1/4 | 25 | 6 fully threaded 1 5/8" Lg. nipples 19 threaded-on-both-ends nipples in the following lengths: 2” (4 ea.), 2 1/2” (3 ea.), 3” (2 ea.), 3 1/2” (2 ea.), 4” (2 ea.), 4 1/2” (1 ea.), 5” (2 ea.), 5 1/2” (1 ea.), 6" (2 ea.) | 00000000 | 000000 |
| 1 1/2 | 25 | 5 fully threaded 1 3/4" Lg. nipples 20 threaded-on-both-ends nipples in the following lengths: 2” (5 ea.), 2 1/2” (3 ea.), 3” (2 ea.), 3 1/2” (2 ea.), 4” (2 ea.), 4 1/2” (1 ea.), 5” (2 ea.), 5 1/2” (1 ea.), 6" (2 ea.) | 00000000 | 000000 |
| 2 | 25 | 6 fully threaded 2" Lg. nipples 19 threaded-on-both-ends nipples in the following lengths: 2 1/2” (3 ea.), 3” (3 ea.), 3 1/2” (2 ea.), 4” (3 ea.), 4 1/2” (1 ea.), 5” (3 ea.), 5 1/2” (1 ea.), 6” (3 ea.) | 00000000 | 000000 |
316/316L Stainless Steel | ||||
NPT Male | ||||
| 1/4 | 100 | 20 fully threaded 7/8" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 000000 |
| 3/8 | 100 | 20 fully threaded 1" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 000000 |
| 1/2 | 66 | 6 fully threaded 1 1/8" Lg. nipples 60 threaded-on-both-ends nipples in the following lengths: 1 1/2” (6 ea.), 2” (6 ea.), 2 1/2” (6 ea.), 3” (6 ea.), 3 1/2” (6 ea.), 4” (6 ea.), 4 1/2” (6 ea.), 5” (6 ea.), 5 1/2" (6 ea.), 6" (6 ea.) | 00000000 | 000000 |
| 1/2 | 100 | 20 fully threaded 1 1/8" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 000000 |
| 3/4 | 66 | 6 fully threaded 1 3/8" Lg. nipples 60 threaded-on-both-ends nipples in the following lengths: 1 1/2” (6 ea.), 2” (6 ea.), 2 1/2” (6 ea.), 3” (6 ea.), 3 1/2” (6 ea.), 4” (6 ea.), 4 1/2” (6 ea.), 5” (6 ea.), 5 1/2" (6 ea.), 6" (6 ea.) | 00000000 | 000000 |
| 3/4 | 100 | 20 fully threaded 1 3/8" Lg. nipples 80 threaded-on-both-ends nipples in the following lengths: 1 1/2” (10 ea.), 2” (15 ea.), 2 1/2” (10 ea.), 3” (10 ea.), 3 1/2” (5 ea.), 4” (10 ea.), 4 1/2” (5 ea.), 5” (5 ea.), 5 1/2" (5 ea.), 6" (5 ea.) | 00000000 | 000000 |
| 1 | 30 | 3 fully threaded 1 1/2" Lg. nipples 27 threaded-on-both-ends nipples in the following lengths: 2” (3 ea.), 2 1/2” (3 ea.), 3” (3 ea.), 3 1/2” (3 ea.), 4” (3 ea.), 4 1/2” (3 ea.), 5” (3 ea.), 5 1/2” (3 ea.), 6" (3 ea.) | 00000000 | 000000 |
| 1 | 75 | 15 fully threaded 1 1/2" Lg. nipples 60 threaded-on-both-ends nipples in the following lengths: 2” (15 ea.), 2 1/2” (10 ea.), 3” (12 ea.), 3 1/2” (5 ea.), 4” (5 ea.), 4 1/2” (4 ea.), 5” (3 ea.), 5 1/2” (3 ea.), 6" (3 ea.) | 00000000 | 000000 |
| 1 1/4 | 25 | 6 fully threaded 1 5/8" Lg. nipples 19 threaded-on-both-ends nipples in the following lengths: 2” (4 ea.), 2 1/2” (3 ea.), 3” (2 ea.), 3 1/2” (2 ea.), 4” (2 ea.), 4 1/2” (1 ea.), 5” (2 ea.), 5 1/2” (1 ea.), 6" (2 ea.) | 00000000 | 000000 |
| 1 1/2 | 25 | 5 fully threaded 1 3/4" Lg. nipples 20 threaded-on-both-ends nipples in the following lengths: 2” (5 ea.), 2 1/2” (3 ea.), 3” (2 ea.), 3 1/2” (2 ea.), 4” (2 ea.), 4 1/2” (1 ea.), 5” (2 ea.), 5 1/2” (1 ea.), 6" (2 ea.) | 00000000 | 000000 |
| 2 | 25 | 6 fully threaded 2" Lg. nipples 19 threaded-on-both-ends nipples in the following lengths: 2 1/2” (3 ea.), 3” (3 ea.), 3 1/2” (2 ea.), 4” (3 ea.), 4 1/2” (1 ea.), 5” (3 ea.), 5 1/2” (1 ea.), 6” (3 ea.) | 00000000 | 000000 |
Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe with Sealant
The threads on this pipe have a sealant applied for extra leak protection in low-pressure applications. Pipe is also known as Schedule 40.
304 stainless steel pipe has very good corrosion resistance. 316 stainless steel pipe has excellent corrosion resistance.
Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
Welded pipe has a raised weld bead on the inside. Seamless pipe is smooth.
For technical drawings and 3-D models, click on a part number.
Fully Threaded—304/304L Stainless Steel
- For Use With: Natural Gas, Steam, Oil, Water, Air
- Specifications Met: ASME B1.20.1, ASTM A733
- Fittings: Use Class 150 stainless steel
- Flanges: Use Class 150 stainless steel
| Pipe Size | Lg. | Thread Type | Construction | Each | |
| 1/8 | 3/4" | NPT | Seamless | 00000000 | 00000 |
| 1/4 | 7/8" | NPT | Seamless | 00000000 | 0000 |
| 3/8 | 1" | NPT | Seamless | 00000000 | 0000 |
| 1/2 | 1 1/8" | NPT | Welded | 00000000 | 0000 |
| 3/4 | 1 3/8" | NPT | Welded | 00000000 | 0000 |
| 1 | 1 1/2" | NPT | Welded | 00000000 | 00000 |
| 1 1/4 | 1 5/8" | NPT | Welded | 00000000 | 00000 |
| 1 1/2 | 1 3/4" | NPT | Welded | 00000000 | 00000 |
| 2 | 2" | NPT | Welded | 00000000 | 00000 |
Fully Threaded—316/316L Stainless Steel
- For Use With: Natural Gas, Steam, Oil, Water, Air
- Specifications Met: ASME B1.20.1, ASTM A733
- Flanges: Use Class 150 stainless steel
- Fittings: Use Class 150 stainless steel
| Pipe Size | Lg. | Thread Type | Construction | Each | |
| 1/8 | 3/4" | NPT | Seamless | 00000000 | 00000 |
| 1/4 | 7/8" | NPT | Seamless | 00000000 | 0000 |
| 3/8 | 1" | NPT | Seamless | 00000000 | 0000 |
| 1/2 | 1 1/8" | NPT | Welded | 00000000 | 0000 |
| 3/4 | 1 3/8" | NPT | Welded | 00000000 | 00000 |
| 1 | 1 1/2" | NPT | Welded | 00000000 | 00000 |
| 1 1/4 | 1 5/8" | NPT | Welded | 00000000 | 00000 |
| 1 1/2 | 1 3/4" | NPT | Welded | 00000000 | 00000 |
| 2 | 2" | NPT | Welded | 00000000 | 00000 |
Thick-Wall Stainless Steel Threaded Pipe Nipples and Pipe
Thick walls, also known as Schedule 80, give this pipe the strength to handle high-pressure applications. It is seamless so it has a smooth interior for unrestricted flow.
304 stainless steel pipe has very good corrosion resistance. 316 stainless steel pipe has excellent corrosion resistance. Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.
For technical drawings and 3-D models, click on a part number.
Fully Threaded—304/304L Stainless Steel
- For Use With: Air, Water, Hydraulic Fluid, Natural Gas, Oil, Steam
- Specifications Met: ASTM A733, ASME B1.20.1
- Fittings: Use Class 3000 stainless steel
- Flanges: Use Use Class 300 or 600 stainless steel
| Pipe Size | Dash Size | Lg. | Thread Type | Construction | Each | |
| 1/8 | 02 | 3/4" | NPT | Seamless | 00000000 | 00000 |
| 1/4 | 04 | 7/8" | NPT | Seamless | 00000000 | 0000 |
| 3/8 | 06 | 1" | NPT | Seamless | 00000000 | 0000 |
| 1/2 | 08 | 1 1/8" | NPT | Seamless | 00000000 | 00000 |
| 3/4 | 12 | 1 3/8" | NPT | Seamless | 00000000 | 00000 |
| 1 | 16 | 1 1/2" | NPT | Seamless | 00000000 | 00000 |
| 1 1/4 | 20 | 1 5/8" | NPT | Seamless | 00000000 | 00000 |
| 1 1/2 | 24 | 1 3/4" | NPT | Seamless | 00000000 | 00000 |
| 2 | 32 | 2" | NPT | Seamless | 00000000 | 00000 |
| 3 | 48 | 2 5/8" | NPT | Seamless | 000000000 | 00000 |
| 4 | 64 | 2 7/8" | NPT | Seamless | 000000000 | 000000 |
Fully Threaded—316/316L Stainless Steel
- For Use With: Air, Water, Hydraulic Fluid, Natural Gas, Oil, Steam
- Specifications Met: ASTM A733, ASME B1.20.1
- Fittings: Use Class 3000 stainless steel
- Flanges: Use Use Class 300 or 600 stainless steel
| Pipe Size | Dash Size | Lg. | Thread Type | Construction | Each | |
| 1/8 | 02 | 3/4" | NPT | Seamless | 0000000 | 00000 |
| 1/4 | 04 | 7/8" | NPT | Seamless | 0000000 | 0000 |
| 3/8 | 06 | 1" | NPT | Seamless | 0000000 | 0000 |
| 1/2 | 08 | 1 1/8" | NPT | Seamless | 0000000 | 00000 |
| 3/4 | 12 | 1 3/8" | NPT | Seamless | 0000000 | 00000 |
| 1 | 16 | 1 1/2" | NPT | Seamless | 0000000 | 00000 |
| 1 1/4 | 20 | 1 5/8" | NPT | Seamless | 0000000 | 00000 |
| 1 1/2 | 24 | 1 3/4" | NPT | Seamless | 0000000 | 00000 |
| 2 | 32 | 2" | NPT | Seamless | 0000000 | 00000 |
| 3 | 48 | 2 5/8" | NPT | Seamless | 00000000 | 000000 |
| 4 | 64 | 2 7/8" | NPT | Seamless | 00000000 | 000000 |