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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How to Measure Threaded Pipe Size
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Right-Angle Flow Rectangular Manifolds
Distribute air or fluid to multiple locations from a single supply source with these manifolds. They are also known as headers. They have mounting holes, so you can mount from the top or side.
PTFE manifolds have the best chemical and corrosion resistance of all the plastic and metal manifolds we offer, so they’re the best choice for acids and other highly corrosive substances. Do not use with deonized water at temperatures above 120° F.
Use a plug (sold separately) to close off any unused inlets and outlets.
For technical drawings and 3-D models, click on a part number.
- For Use With: Acetic Acid, Acetone, Bleach, Deionized Water, Hydrochloric Acid, Nitric Acid, Phosphoric Acid, Sulfuric Acid
- Temperature Range: -20° to 180° F
- Maximum Pressure: 120 psi @ 72° F
No. of Outlets | Inlet Pipe Size | Outlet Pipe Size | Lg. | Wd. | Ht. | Outlet Ctr.-to-Ctr. | Color | Each | |
Outlets on One Side—Standard Outlet Spacing | |||||||||
---|---|---|---|---|---|---|---|---|---|
2 | 1/4 | 1/8 | 1 3/4" | 1" | 1" | 3/4" | White | 0000000 | 000000 |
2 | 3/8 | 1/4 | 2 3/8" | 1 1/4" | 1 1/4" | 7/8" | White | 0000000 | 00000 |
2 | 1/2 | 3/8 | 2 3/4" | 1 1/2" | 1 1/2" | 1" | White | 0000000 | 00000 |
4 | 1/4 | 1/8 | 3 1/4" | 1" | 1" | 3/4" | White | 0000000 | 00000 |
4 | 3/8 | 1/4 | 4 1/8" | 1 1/4" | 1 1/4" | 7/8" | White | 0000000 | 00000 |
4 | 1/2 | 3/8 | 4 3/4" | 1 1/2" | 1 1/2" | 1" | White | 0000000 | 000000 |
Low-Pressure Clamp-On Connectors for Chemical Waste
- For Use With: Acetone, Alcohol, Ammonia, Bleach, Calcium Chloride, Chlorine, Citric Acid, Fluoboric Acid, Hydrochloric Acid, Phosphoric Acid, Salt Water, Sodium Carbonate, Sodium Chloride, Sodium Hydroxide, Sulfuric Acid (30%), Water
- Temperature Range: 0° to 180° F
- Specifications Met: ASTM C1173
- For Pipe Material: See table
With an FEP sleeve and PTFE sealing tape, these connectors withstand chemicals better than rubber connectors. Use them for joining low-pressure chemical waste drainpipe and fittings or transitioning between different chemical piping. The connectors are 316 stainless steel for excellent corrosion resistance. They stand up to wet environments, just like 304 stainless steel, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
To install, chamfer and deburr both ends of the pipe you need to join. Mark each pipe adjacent to the connector bands and apply 10 layers of the PTFE tape directly over each line. Doing this creates a seal between the sleeve and the pipe for extra leak protection. Then, center the FEP sleeve over the tape and use a heat gun to shrink the sleeve onto the pipe. Next, center the connector and tighten the clamps to 60 inch-lbs. to form a tight seal. Finally, test for leaks.
For Pipe OD | For Pipe Size | Lg. | Max. Pressure | Material | Sleeve Material | For Pipe Material | Includes | Each | |
1.7"-2.05" | 1 1/2 | 2" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 0000000 |
2.1"-2.6" | 2 | 3" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
2.6"-3.1" | 2 1/2 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
3.15"-3 1/2" | 3 | 6" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
4.3"-5.2" | 4 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
6.2"-7" | 6 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
8.35"-9.2" | 8 | 6" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
Ultra-Corrosion-Resistant Yor-Lok Fittings for Nickel Alloy Tubing
- For Use With: Acetic Acid, Air, Bleach, Cutting Oil, Diesel Fuel, Formic Acid, Fuel Oil, Gasoline, Hydraulic Fluid, Iron Chlorides, Mineral Oil, Salt Water, Steam, Water
- Temperature Range: 0° to 1000° F
- Tubing: Use with seamless soft C276 nickel
- Specifications Met: ASME B31.3
With the best corrosion resistance of any metal tube fittings we offer, these C276 nickel Hastelloy fittings stand up to aggressive chemicals and resist pitting and cracking from stress. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They include a nut with two sleeves (ferrules). The sleeves bite into tubing as you tighten the nut, creating a strong, leak-resistant seal. Fittings are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
For technical drawings and 3-D models, click on a part number.
Compression Fittings for Plastic Tubing—Chemicals
- For Use With: PFA Plastic: Hydrochloric Acid, Sulfuric Acid
PTFE Plastic: Alcohol, Ammonia, Benzoic Acid, Bleach, Bromine, Coolant, Fluoboric Acid, Hydrochloric Acid, Hydrofluoric Acid, Nitric Acid, Organic Solvents, Sodium Carbonate, Sulfuric Acid - Temperature Range: PFA Plastic: 0° to 350° F
PTFE Plastic: -40° to 185° F - Tubing: PFA Plastic: Use with hard (Durometer 50D-65D) PFA or PTFE plastic
PTFE Plastic: Use with hard (Durometer 60D) PFA or PTFE plastic
A sleeve (ferrule) compresses the tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. Fittings that include a gripper sleeve on the tubing create an even tighter seal.
PTFE fittings are highly resistant to most acids, alcohols, detergents, and solvents. They’re made by machining. Their nut is made of PVDF, which is resistant to halogens such as chlorine and bromine, strong acids such as hydrofluoric and nitric acids, and organic solvents.
For technical drawings and 3-D models, click on a part number.
For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
---|---|---|---|---|---|---|
4mm | 1/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 000000 |
6mm | 1/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
6mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
8mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
10mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
10mm | 3/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
12mm | 3/8 | PTFE Plastic | White | 80 psi @ 72° F | 000000000 | 00000 |
12mm | 1/2 | PTFE Plastic | White | 80 psi @ 72° F | 000000000 | 00000 |
Stainless Steel Push-to-Connect Tube Fittings for Chemicals
(SAE Straight) Male
Threads with Gasket
- For Use With: Alcohol, Bleach, Lubricated Air, Nitric Acid, Sodium Carbonate, Sulfuric Acid
- Temperature Range: 0° to 175° F
- Tubing: Use with firm or hard (Durometer 80A-60D) FEP, polyethylene, or PTFE plastic
Fittings are 316 stainless steel, which has excellent chemical resistance and is more durable than plastic. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. Instead of a release ring, these fittings have a release sleeve that slides back to disconnect tubing.
Metric and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
For technical drawings and 3-D models, click on a part number.
(SAE Straight) Male
Threads with Gasket
For Tube OD | Pipe Size | Thread Size | Thread Pitch, mm | Material | Gasket Material | Max. Pressure | Each | |
NPT Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 0000000 | 000000 |
1/4" | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
3/8" | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
3/8" | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
3/8" | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
1/2" | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
1/2" | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
1/2" | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 0000000 | 00000 |
4mm | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 0000000 | 00000 |
4mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
6mm | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
6mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
8mm | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
8mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
10mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
10mm | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
10mm | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
Metric Threads | ||||||||
1/4" | __ | M5 | 0.8 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
3/8" | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
3/8" | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | M3 | 0.5 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | M5 | 0.8 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | M6 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M3 | 0.5 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M5 | 0.8 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M6 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
8mm | __ | M6 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
8mm | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 0000000 | 00000 |
8mm | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
8mm | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
10mm | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||||||
1/4" | __ | 10-32 | __ | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | 10-32 | __ | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | 10-32 | __ | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 0000000 | 00000 |
(SAE Straight) Male
Threads with Gasket
For Tube OD | Pipe Size | Thread Size | Thread Pitch, mm | Material | Gasket Material | Max. Pressure | Each | |
NPT Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 0000000 | 000000 |
1/4" | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
3/8" | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
3/8" | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
3/8" | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
1/2" | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
1/2" | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
1/2" | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 0000000 | 000000 |
4mm | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 0000000 | 00000 |
4mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
6mm | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
6mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
8mm | 1/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
8mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 00000 |
10mm | 1/4 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
10mm | 3/8 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
10mm | 1/2 | __ | __ | 316 Stainless Steel | __ | 345 psi @ 72° F | 00000000 | 000000 |
Metric Threads | ||||||||
1/4" | __ | M5 | 0.8 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
1/4" | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
3/8" | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 000000 |
3/8" | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 000000 |
1/2" | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 0000000 | 000000 |
4mm | __ | M3 | 0.5 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 0000000 | 00000 |
4mm | __ | M5 | 0.8 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M3 | 0.5 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M5 | 0.8 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
6mm | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
8mm | __ | M7 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
8mm | __ | M8 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 0000000 | 00000 |
8mm | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
10mm | __ | M10 | 1 | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 000000 |
UN/UNF (SAE Straight) Threads | ||||||||
1/4" | __ | 10-32 | __ | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
4mm | __ | 10-32 | __ | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 0000000 | 00000 |
6mm | __ | 10-32 | __ | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |
8mm | __ | 10-32 | __ | 316 Stainless Steel | Viton® Fluoroelastomer Rubber | 345 psi @ 72° F | 00000000 | 00000 |