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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.
Male Threads with
Gasket and Washer
UN/UNF (SAE)
Male Threads with Gasket
- For Use With: See table
- Specifications Met: See table
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size (A) | Thread Size (A) | Dash Size (A) | Thread Size (B) | Dash Size (B) | Max. Pressure | For Use With | Specifications Met | Each | |
NPT Female × Metric Male | |||||||||
| 3/8 | __ | 06 | M18 × 1.5 mm | __ | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 000000 |
| 1/2 | __ | 08 | M18 × 1.5 mm | __ | 4,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 00000 |
UN/UNF (SAE) Female × Metric Male | |||||||||
| __ | 3/4"-16 | 08 | M18 × 1.5 mm | __ | 3,500 psi @ 72° F | Hydraulic Fluid (Petroleum Base), Oil, Water | __ | 000000000 | 00000 |
Metric Female × UN/UNF (SAE) Male | |||||||||
| __ | M18 × 1.5 mm | __ | 3/4"-16 | 08 | 6,000 psi @ 72° F | Hydraulic Fluid (Petroleum Base), Oil, Water | __ | 000000000 | 00000 |
Male Threads with
Gasket and Washer
- For Use With: See table
- Specifications Met: See table
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| Pipe Size (A) | Dash Size (A) | Thread Size (B) | Max. Pressure | For Use With | Specifications Met | Each | |
BSPP Male × Metric Male | |||||||
| 1/4 | 04 | M18 × 1.5 mm | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 000000 |
| 3/8 | 06 | M18 × 1.5 mm | 5,000 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
| 1/2 | 08 | M18 × 1.5 mm | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
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.
- For Use With:
NPTF: Air, Hydraulic Fluid, Water
Metric: Air, Hydraulic Fluid, Oil, Water - Specifications Met:
NPTF: ASTM A108
Metric: DIN 7631, ISO 6149, ISO 9974
| Thread Size | Max. Pressure | Each | |
Metric Female | |||
|---|---|---|---|
| M18 × 1.5 mm | 4,000 psi @ 72° F | 00000000 | 000000 |
Male Threads with
Gasket and Washer
- For Use With: See table
- Specifications Met: See table
| Pipe Size (A) | Thread Size (A) | Dash Size (A) | Pipe Size (B) | Thread Size (B) | Dash Size (B) | Max. Pressure | For Use With | Specifications Met | Each | |
NPT Female × Metric Male | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8 | __ | 06 | __ | M18 × 1.5 mm | __ | 3,500 psi @ 72° F | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 2353, ISO 8434-1 | 00000000 | 00000 |
| 1/2 | __ | 08 | __ | M18 × 1.5 mm | __ | 3,500 psi @ 72° F | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 2353, ISO 8434-1 | 00000000 | 0000 |
Metric Female × NPT Male | ||||||||||
| __ | M18 × 1.5 mm | __ | 3/8 | __ | 06 | 5,500 psi @ 72° F | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974 | 00000000 | 00000 |
| __ | M18 × 1.5 mm | __ | 1/2 | __ | 08 | 4,500 psi @ 72° F | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974 | 00000000 | 00000 |
(SAE) 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 Male × Metric Male | |||||||
|---|---|---|---|---|---|---|---|
| 3/8 | 06 | M18 × 1.5 mm | 5,500 psi @ 72° F | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 2353, ISO 8434-1 | 00000000 | 000000 |
BSPP Male × Metric Male | |||||||
| 1/2 | 08 | M18 × 1.5 mm | 4,500 psi @ 72° F | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
Metal Barbed Hose Fittings for Air and Water
Slide the barbed end into rubber hose and secure with a clamp or a crimp-on hose ferrule.
Brass fittings are softer than other metal fittings, so they’re easier to thread together. Plain brass fittings have good corrosion resistance. Nickel-plated brass fittings resist corrosion better than plain brass fittings.
Aluminum fittings are lighter in weight than other metal fittings. They have good corrosion resistance.
Stainless steel fittings have very good corrosion resistance. 303 stainless steel fittings won’t rust when exposed to water, making them good for areas that require frequent cleanings.Fittings with a threaded end are also known as hose nipples.
Metric, UN/UNF (SAE), and BSPP male threads with gasket protect against leaks.
For technical drawings and 3-D models, click on a part number.
and UN/UNF (SAE) Male
Threads with Gasket
- Maximum Pressure: See table
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
| For Hose ID | Thread Size | Gasket Material | Max. Pressure | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2" | M18 × 1.5 mm | Buna-N Rubber | 300 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |
| 3/4" | M18 × 1.5 mm | Buna-N Rubber | 300 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 1" | M18 × 1.5 mm | Buna-N Rubber | 300 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 19mm | M18 × 1.5 mm | Buna-N Rubber | 250 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
Nickel-Plated Brass | ||||||||
| 1/2" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -20° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 3/4" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 1" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 0000000 | 00000 |
| 19mm | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 000000 | 00000 |
Aluminum | ||||||||
| 1/2" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 3/4" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 1" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 19mm | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
303 Stainless Steel | ||||||||
| 1/2" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 3/4" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 1" | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
| 19mm | M18 × 1.5 mm | Buna-N Rubber | 125 psi @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 00000 |
Metal Barbed Hose Fittings for Chemicals and Petroleum
Made of 316 stainless steel, these fittings have the corrosion resistance to stand up to a wide variety of chemicals, as well as fuels, gasoline, and oils. To connect, slide the barbed end into plastic or rubber hose and secure with a clamp.
Adapters are also known as hose nipples; they adapt a barbed end to a threaded end.
Metric and UN/UNF (SAE) male threads have a gasket to protect against leaks.
For technical drawings and 3-D models, click on a part number.
- For Use With: See table
- Maximum Pressure: See table
- Temperature Range: -40° to 300° F
- Attachment Type: Use Band-and-Buckle Clamps
Thread | |||||||
|---|---|---|---|---|---|---|---|
| For Hose ID | Size | Pitch, mm | Gasket Material | Max. Pressure | For Use With | Each | |
316 Stainless Steel | |||||||
| 1/2" | M18 | 1.5 | Fluoroelastomer Rubber | 125 psi @ 72° F | Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 000000 |
| 3/4" | M18 | 1.5 | Fluoroelastomer Rubber | 125 psi @ 72° F | Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 00000 |
| 1" | M18 | 1.5 | Fluoroelastomer Rubber | 125 psi @ 72° F | Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 00000 |
| 19mm | M18 | 1.5 | Fluoroelastomer Rubber | 125 psi @ 72° F | Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil | 000000000 | 00000 |
International Standard ISO Minimal-Spill
Quick-Disconnect Hose Couplings for Hydraulic Fluid
Also known as flush-face couplings, the plugs and sockets have a flat face, which allows them to mate close against each other, reducing fluid loss when connecting and disconnecting the line. A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them when you need frequent access to a line. All of the International Standard ISO Minimal-Spill quick-disconnect plugs are compatible with any of the International Standard ISO Minimal-Spill quick-disconnect sockets of the same coupling size, regardless of the pipe size. Couplings are compatible with ISO 16028 Parker FEM, ISO 16028 Perfecting HT, and ISO 16028 Snap-Tite 74 couplings. Also known as double shut-off couplings, the plugs and sockets both have a shut-off valve that stops the flow when the coupling is separated. They are zinc-plated steel, which has excellent strength and durability and fair corrosion resistance.
Plugs are also known as nipples.
Sockets are push-to-connect style. To connect, push the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects.
Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size. Pressure ratings are given for static (constant) pressure conditions.
Warning: Never attempt to connect or disconnect couplings when operating at maximum pressure. Stop the flow before you disconnect the line.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Temperature Range: -20° to 212° F
- Compatible With: ISO 16028 Parker FEM, ISO 16028 Perfecting HT, ISO 16028 Snap-Tite 74
- Specifications Met
- Specifications Met: ISO 16028
- Maximum Pressure: See table
- Temperature Range: -20° to 212° F
- Compatible With: ISO 16028 Parker FEM, ISO 16028 Perfecting HT, ISO 16028 Snap-Tite 74
- Specifications Met
- Specifications Met: ISO 16028
Push-On Barbed Hose Fittings for Hydraulic Fluid
These fittings have sharp barbs to grip rubber push-on hose with no clamps or ferrules required. The more you pull on the fittings, the tighter the hose will grip. Use them in low-pressure hydraulic applications up to 350 psi. Also known as hose nipples, they adapt a barbed end to a threaded end, so you can connect to pumps, cylinders, and other equipment in your hydraulic system. Fittings are zinc-plated steel, which has excellent strength and durability. Fittings have fair corrosion resistance.
Fittings that swivel until tightened rotate 360° for easy installation.
Note: To ensure proper connection, the barbed end has to be pushed in all the way, with the hose end concealed by the ring.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 350 psi @ 72° F
- Maximum Vacuum: 28 in. of Hg @ 72° F
- Temperature Range: -40° to 155° F
- For Hose Manufacturer Series: Parker 801
- Maximum Pressure: See table
- Maximum Vacuum: 28 in. of Hg @ 72° F
- Temperature Range: -40° to 155° F
- For Hose Manufacturer Series: Parker 801
Compression Fittings for Copper Tubing
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
- Temperature Range: See Table
- Tubing: Use with copper
- Specifications Met: See Table
A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. They are brass for good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
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 | Maximum Pressure | Each | |
Metric Threads | |||||||
| 15 | 1.5 | M18 | 1.5 | 316 Stainless Steel | 4,500 psi @ 72° F | 00000000 | 0000000 |
Compression Fittings for Steel Tubing
- For Use With: Inch: Air, Hydraulic Fluid, Water
Metric: Hydraulic Fluid - Tubing: Inch: Use with welded steel
Metric: Use with seamless steel - Specifications Met: Inch: SAE J514
Metric: ISO 8434, DIN 2353
A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless and bite fittings.
Zinc-plated steel fittings have fair corrosion resistance.
ISO 8434 (formerly DIN 2353) fittings meet international standards for tube fitting pressures.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: See table
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Thread Size | Thread Pitch | Material | Max. Pressure | Temp. Range, °F | Each | |
Metric Taper Threads | ||||||||
| 15mm | Not Rated | M18 | 1.5 mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 000000 |
- Temperature Range: See table
| For Tube OD | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
| 15mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 00000 |
- Temperature Range: See table
| For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
| 15mm | Zinc-Plated Steel | 3,600 psi @ 72° F | -20° to 230° | 00000000 | 00000 |
Vibration-Resistant Compression Fittings for Steel Tubing
- For Use With: Cutting Oil, Diesel Fuel
- Temperature Range: -30° to 250° F
- Tubing: Use with seamless steel
- Specifications Met: DIN 3861
The sleeve (ferrule) in these fittings is made of rubber instead of metal, so it cushions the tubing and absorbs vibration while creating a tight seal. Fittings are also known as flareless fittings. They are zinc-plated steel for fair corrosion resistance.
Metric male threads have either a gasket or a gasket and washer to prevent leaks.
For technical drawings and 3-D models, click on a part number.
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.
Male Threads with
Gasket and Washer
- 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 | Washer Material | Max. Pressure | Temp. Range, °F | Each | |
Metric Threads | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | M18 | 1.5 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Buna-N Rubber | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 000000 |
| 1/2" | M18 | 1.5 | Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil | __ | Zinc-Plated Steel | Buna-N Rubber | Zinc-Plated Steel | 4,500 psi @ 72° F | -20° to 212° | 00000000 | 00000 |
| 5/8" | M18 | 1.5 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Buna-N Rubber | Zinc-Plated Steel | Buna-N Rubber | __ | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
- For Use With: NPTF, Metric, BSPP with O-Rings, BSPT: Air, Fuel, Oil, Hydraulic Fluid, Mineral Oil
BSPP with Washers: Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil - Temperature Range: NPTF and BSPT: -60° to 400° F
Metric and BSPP with O-Rings: -30° to 200°F
BSPP with Washers: -20° to 212° F
- 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.
Sleeves for metric tube ODs convert the fitting from inch to metric.
For Tube OD | |||||
|---|---|---|---|---|---|
| Inch | Metric, mm | Sleeve Material | Max. Pressure | Each | |
Inch | |||||
| 1/2" | __ | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 00000 |
| 5/8" | __ | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
Metric | |||||
| 1/2" | 12 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | 14 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | 15 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
| 5/8" | 16 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
Plastic Barbed Tube Fittings for Air and Water
Fittings have multiple barbs that grip onto tubing.
Nylon fittings have excellent impact and abrasion resistance.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: See table
- Tubing: Semi-Clear: Use with firm or soft (Durometer 45A-80A) polyurethane rubber or PVC plastic
Opaque: Use with firm or soft (Durometer 40A-80A) polyurethane rubber or PVC plastic
| For Tube ID | Thread Size | Material | Color | Clarity | Max. Pressure | Temp. Range, °F | Pkg. Qty. | Pkg. | |
Metric Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 12mm | M18 × 1.5 mm | Nylon Plastic | Gray | Opaque | 145 psi @ 72° F | -40° to 190° | 10 | 00000000 | 000000 |
- Temperature Range: See table
- Tubing: Semi-Clear: Use with firm or soft (Durometer 45A-80A) polyurethane rubber or PVC plastic
Opaque: Use with firm or soft (Durometer 40A-80A) polyurethane rubber or PVC plastic
Metric Medium-Strength Steel Coupling Nuts—Class 8
Often referred to as extension nuts, use these to connect and extend threaded rods. They're comparable in strength to Class 8.8 bolts.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
Black-oxide steel coupling nuts have a dark surface color and are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
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.
Coupling nuts with a black-oxide finish have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Metric Super-Corrosion-Resistant
316 Stainless Steel Coupling Nuts
Made from 316 stainless steel, these coupling have excellent resistance to chemicals and salt water. Also known as extension nuts, use them to connect and extend threaded rods. They may be mildly magnetic.
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 | |
316 Stainless Steel | |||||||
| M18 | 2.5 | 54 | 27 | 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 | |||||
| M18 | 54 | 27 | 000000000 | 000000 | 000000 |
Stainless Steel Extra-Long Coupling Nuts
These coupling nuts have good chemical resistance. Also known as sleeve nuts, they're at least twice the length of standard coupling nuts to provide more room to connect and extend long lengths of threaded rods.
For technical drawings and 3-D models, click on a part number.
Thread | Each | |||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Wd., mm | Threading | Min. Thread Lg., mm | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||
| M18 | 2.5 | 108 | 24 | Partially Threaded | 18 | 000000000 | 0000000 | 000000 |
Shoulder Screws
