Material Material |
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Type Type |
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 | Adapter |
Shape Shape |
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 | Straight |
Connection Style Connection Style |
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| Threaded |
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| Compression |
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| Flared |
For Use With For Use With |
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Maximum Pressure Maximum Pressure |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Mount Type Mount Type |
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 | Through Wall |
DFARS (Defense Acquisition Regulations Supplement) DFARS (DefenseAcquisition Regulations Supplement)  |
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Body Shape Body Shape |
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 | Hex |
Fabrication Fabrication |
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Finish Finish |
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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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About Nuts, Materials, and Finishes
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Extreme-Pressure Stainless Steel Threaded Pipe Fittings
With the strength to handle extreme pressures, these fittings can be used to connect equipment in hydraulic fluid lines. 316 stainless steel fittings have excellent corrosion resistance. BSPP and metric male threads have either a gasket or a gasket and washer to prevent leaks. UN/UNF (SAE) threads are also known as O-ring boss threads; the male threads have a gasket to prevent leaks.
For technical drawings and 3-D models, click on a part number.
UN/UNF (SAE)
Male Threads with Gasket
- For Use With: See table
- Specifications Met: See table
316 Stainless Steel | ||||||
|---|---|---|---|---|---|---|
| Thread Size (A) | Dash Size (A) | Thread Size (B) | Max. Pressure | For Use With | Each | |
UN/UNF (SAE) Female × Metric Male | ||||||
| 1 5/16"-12 | 16 | M33 × 2 mm | 3,000 psi @ 72° F | Hydraulic Fluid (Petroleum Base), Oil, Water | 000000000 | 000000 |
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 galvanized steel, which has fair corrosion resistance. BSPP and metric male threads have a gasket and washer to prevent leaks.
For technical drawings and 3-D models, click on a part number.
Male Threads with
Gasket and Washer
- For Use With: See table
- Specifications Met: See table
| Pipe Size (A) | Dash Size (A) | Thread Size (B) | Max. Pressure | For Use With | Specifications Met | Each | |
NPT Female × Metric Male | |||||||
|---|---|---|---|---|---|---|---|
| 1 | 16 | M33 × 2 mm | 3,000 psi @ 72° F | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974 | 00000000 | 000000 |
- Temperature Range: -20° to 230° F
| For Thread Size | Gasket Material | Each | |
For Metric Male | |||
|---|---|---|---|
| M33 | Buna-N Rubber | 00000000 | 00000 |
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.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall or panel to create an inlet or outlet.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
Nickel-Plated Brass | |||||
|---|---|---|---|---|---|
| Pipe Size | Thread Size | For Max. Wall Thick. | Max. Pressure | Each | |
BSPP Female × Metric Male | |||||
| 3/4 | M33 × 1.5 mm | 0.093" | 1,230 psi @ 72° F | 00000000 | 000000 |
Vibration-Resistant Compression
Fittings for Stainless Steel Tubing
- For Use With: Acetylene, Air, Butane, Compressed Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Helium, Hydraulic Fluid (Petroleum Base), Kerosene, Mineral Oil, Natural Gas, Nitrogen, Propane, Soap Solutions
- Temperature Range: -10° to 400° F
- Tubing: Use with seamless 316Ti or 321 stainless steel
- Specifications Met: DIN 3861
Instead of a metal sleeve (ferrule), these fittings have a rubber sleeve that cushions tubing and absorbs vibration to maintain a tight seal, even when connected to large pumps. However, rubber sleeves can’t withstand temperatures as high as metal ones. To create the strong seal, tighten the included nut. These fittings are made of 316 stainless steel, so they have excellent corrosion resistance. They’re also known as flareless fittings. All meet DIN 3861, which is an international standard for compression tube fitting specifications.
BSPP and metric male threads have a gasket to prevent leaks.
For technical drawings and 3-D models, click on a part number.
Male Threads with
Gasket and Washer
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD, mm | Wall Thickness, mm | Thread Size | Thread Pitch, mm | Material | Gasket Material | Maximum Pressure | Each | |
Metric Threads | ||||||||
| 28 | 2.5 | M33 | 2 | 316 Stainless Steel | Fluoroelastomer Rubber | 2,300 psi @ 72° F | 00000000 | 0000000 |
For Tube | |||||
|---|---|---|---|---|---|
| OD, mm | Wall Thickness, mm | Nut Material | Maximum Pressure | Each | |
| 28 | 2.5 | 316 Stainless Steel | 2,300 psi @ 72° F | 00000000 | 0000000 |
37° Flared Fittings for Steel Tubing
- Tubing: Use with seamless steel
- Specifications Met: SAE J514
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately. Fittings are zinc-plated steel for fair corrosion resistance.
To prevent leaks, UN/UNF (SAE) male threads have a gasket. Metric and BSPP male threads have either a gasket or a gasket and washer.
For technical drawings and 3-D models, click on a part number.
- For Use With: See Table
- Temperature Range: See Table
| For Tube OD | Thread Size | Thread Pitch, mm | For Use With | O-Ring Material | Material | Gasket Material | Max. Pressure | Temp. Range, °F | Each | |
Metric Threads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1" | M33 | 2 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Buna-N Rubber | Zinc-Plated Steel | Buna-N Rubber | 1,400 psi @ 72° F | -30° to 200° | 00000000 | 0000000 |
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
| For Tube OD | Nut Material | Max. Pressure | Each | |
| 1" | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 00000 |
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on steel tubing that is flared to 37°. Sleeves are zinc-plated steel for fair corrosion resistance. They are also known as ferrules.
For Tube OD | ||||
|---|---|---|---|---|
| Inch | Sleeve Material | Max. Pressure | Each | |
Inch | ||||
| 1" | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 00000 |
Metric 18-8 Stainless Steel Coupling Nuts
Made from 18-8 stainless steel, these metric coupling nuts have good chemical resistance and may be mildly magnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Thread | Each | ||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Wd., mm | Specifications Met | 1-9 | 10-Up | |
18-8 Stainless Steel | |||||||
| M33 | 3.5 | 99 | 50 | DIN 6334 | 000000000 | 000000 | 000000 |
Brass Coupling Nuts
These coupling nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg., mm | Wd., mm | 1-9 | 10-Up | |
Brass | |||||
| M33 | 99 | 50 | 000000000 | 0000000 | 0000000 |