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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Compact Extreme-Pressure Steel Threaded Pipe Fittings
These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are zinc-plated steel, which have better corrosion resistance than plain steel fittings.
- For Use With:
NPTF and UN/UNF (SAE Straight): Air, Hydraulic Fluid, Water
Metric, BSPP and BSPT: Air, Hydraulic Fluid, Oil, Water - Specifications Met: See table
Pipe Size | Dash Size | Drive Size | Max. Pressure | Material | Specifications Met | Each | |
BSPT Male | |||||||
|---|---|---|---|---|---|---|---|
| 1/8 | 02 | 5 mm | 5,000 psi @ 72° F | Zinc Plated Steel | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
| 1/4 | 04 | 7 mm | 6,000 psi @ 72° F | Zinc Plated Steel | DIN EN 10226-1, ISO 7-1 | 00000000 | 0000 |
| 3/8 | 06 | 8 mm | 5,500 psi @ 72° F | Zinc Plated Steel | DIN EN 10226-1, ISO 7-1 | 00000000 | 0000 |
| 1/2 | 08 | 10 mm | 4,500 psi @ 72° F | Zinc Plated Steel | DIN EN 10226-1, ISO 7-1 | 00000000 | 0000 |
| 3/4 | 12 | 12 mm | 3,500 psi @ 72° F | Zinc Plated Steel | DIN EN 10226-1, ISO 7-1 | 00000000 | 0000 |
| 1 | 16 | 17 mm | 3,000 psi @ 72° F | Zinc Plated Steel | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
- For Use With: See table
- Specifications Met: See table
| Pipe Size | Dash Size | Plug Construction | Max. Pressure | Material | For Use With | Specifications Met | Each | |
BSPT Male | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | 02 | Hollow | 3,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
| 1/4 | 04 | Solid | 3,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 0000 |
| 3/8 | 06 | Solid | 3,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 0000 |
| 1/2 | 08 | Solid | 3,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 0000 |
| 5/8 | __ | Solid | 3,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
| 3/4 | 12 | Solid | 3,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
| 1 | 16 | Solid | 3,000 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
| 1 1/4 | 20 | Solid | 2,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
| 1 1/2 | 24 | Solid | 2,000 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
| 2 | 32 | Hollow | 2,000 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Oil, Water | DIN EN 10226-1, ISO 7-1 | 00000000 | 00000 |
Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings
Made to tighter tolerances than other stainless steel pipe fittings, these are also known as instrumentation fittings. The male threads are rolled for extra strength in extreme-pressure applications. Fittings are commonly used to connect equipment in gas and hydraulic fluid lines. They are 316 stainless steel for excellent corrosion resistance.
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met:
NPT: ASME B1.20.1, ASME B31.1, ASME B31.3
BSPT: ISO 7-1
316 Stainless Steel | ||||||
|---|---|---|---|---|---|---|
| Pipe Size | Dash Size | Plug Construction | Max. Pressure | Max. Steam Pressure | Each | |
BSPT Male | ||||||
| 1/8 | 02 | Solid | 6,100 psi @ 72° F | 6,100 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 04 | Solid | 6,200 psi @ 72° F | 6,200 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | Solid | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | Solid | 3,600 psi @ 72° F | 3,600 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | Solid | 4,300 psi @ 72° F | 4,300 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | Solid | 4,100 psi @ 72° F | 4,100 psi @ 300° F | 000000000 | 00000 |
Extreme-Pressure Brass Threaded Pipe Fittings
Extreme pressures are no problem for these heavy-duty fittings. They are brass for good corrosion resistance.
Nickel-plated brass fittings have better corrosion resistance than plain brass fittings. BSPP male threads have a gasket and washer to protect against leaks.
- For Use With: Air, Water
- Specifications Met: ISO 7.1, ISO 228
Threads with
Gasket and Washer
- For Use With: Air, Water
- Specifications Met:
BSPP: ISO 7.1, ISO 228
BSPT: DIN 906, ISO 7.1, ISO 228
| Pipe Size | Drive Size | Max. Pressure | Material | Each | |
BSPP Male | |||||
|---|---|---|---|---|---|
| 1/8 | 5 mm | 2,900 psi @ 72° F | Nickel-Plated Brass | 00000000 | 00000 |
| 1/4 | 6 mm | 2,100 psi @ 72° F | Nickel-Plated Brass | 00000000 | 0000 |
| 3/8 | 8 mm | 1,400 psi @ 72° F | Nickel-Plated Brass | 00000000 | 0000 |
| 1/2 | 10 mm | 1,400 psi @ 72° F | Nickel-Plated Brass | 00000000 | 00000 |
BSPT Male | |||||
| 1/8 | 5 mm | 2,900 psi @ 72° F | Nickel-Plated Brass | 00000000 | 0000 |
| 1/4 | 6 mm | 2,100 psi @ 72° F | Nickel-Plated Brass | 00000000 | 0000 |
| 3/8 | 8 mm | 1,400 psi @ 72° F | Nickel-Plated Brass | 00000000 | 0000 |
| 1/2 | 10 mm | 1,400 psi @ 72° F | Nickel-Plated Brass | 00000000 | 0000 |
| 3/4 | 12 mm | 1,700 psi @ 72° F | Brass | 00000000 | 00000 |
- For Use With: Air, Water
- Specifications Met: ISO 7.1, ISO 228
Precision Extreme-Pressure Brass Threaded Pipe Fittings
Also known as instrumentation fittings, these have the most precise threads and the tightest tolerances of all the brass pipe fittings we offer. Fittings are brass for good corrosion resistance.
- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met:
NPT: ASME B1.20.1, ASME B31.1, ASME B31.3
BSPT: ASME B31.3, DIN 2999, ISO 7.1