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 Measuring Hose and Tube Clamps
What's the best way to determine the clamp size you'll need? Simply measure the outside diameter of your hose with the fitting installed. Some clamps accommodate a range of sizes, so be sure the size you need falls in the middle of that range.
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Grip-Lock Hose Couplings for Air
Also known as Bowes couplings, these consist of a plug and a socket (both sold separately) that connect with a quarter twist. They can handle higher-pressures than twist-claw couplings, and have a lower profile to fit in cramped spaces. All of the grip-lock plugs are compatible with any of the grip-lock sockets, regardless of the pipe size or barbed hose ID.
Plugs have a spring-loaded locking sleeve to prevent accidental disconnection. The sleeve automatically locks into place when you connect the coupling. To disconnect, slide the locking sleeve back and twist the coupling apart.
Plugs and sockets with a barbed end insert into plastic or rubber hose and secure with a clamp.
Zinc-plated steel plugs and sockets are stronger and more durable than other metal plugs and sockets. They have fair corrosion resistance, so they should be used primarily in dry environments. Brass plugs and sockets are softer than other metal plugs and sockets, so they’re easier to thread together. They have good corrosion resistance. 303 stainless steel plugs and sockets have very good corrosion resistance. They’re the best choice for high-humidity environments.
NPTF (Dryseal) threads are compatible with NPT threads.
Warning: There is no valve in these couplings. Stop the flow of air before you disconnect the line.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: Not Rated
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431, MIL-C-3486
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: Not Rated
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431, MIL-C-3486
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
Pipe Size | Thread Type | Temperature Range, °F | Each | |
Zinc-Plated Steel | ||||
---|---|---|---|---|
3/8 | NPTF | -40° to 250° | 0000000 | 000000 |
1/2 | NPTF | -40° to 250° | 0000000 | 00000 |
3/4 | NPTF | -40° to 250° | 0000000 | 00000 |
Brass | ||||
3/8 | NPTF | -20° to 175° | 0000000 | 00000 |
1/2 | NPTF | -20° to 175° | 0000000 | 00000 |
3/4 | NPTF | -20° to 175° | 0000000 | 00000 |
303 Stainless Steel | ||||
3/4 | NPTF | -40° to 250° | 0000000 | 00000 |
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: Not Rated
- Temperature Range: See table
- Attachment Type: Use Band-and-Buckle Clamps
- Specifications Met: MIL-A-A-50431, MIL-C-3486
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: Not Rated
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431, MIL-C-3486
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
Pipe Size | Thread Type | Temperature Range, °F | Each | |
Zinc-Plated Steel | ||||
---|---|---|---|---|
3/8 | NPTF | -40° to 250° | 0000000 | 000000 |
1/2 | NPTF | -40° to 250° | 0000000 | 00000 |
3/4 | NPTF | -40° to 250° | 0000000 | 00000 |
Brass | ||||
3/8 | NPT | -20° to 175° | 0000000 | 00000 |
1/2 | NPT | -20° to 175° | 0000000 | 00000 |
3/4 | NPT | -20° to 175° | 0000000 | 00000 |
303 Stainless Steel | ||||
3/4 | NPTF | -40° to 250° | 0000000 | 00000 |
Replacement Gaskets (10/Pkg.) | 0000000 | Pkg. | 000000 |
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: Not Rated
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431, MIL-C-3486
- Compatible With: Dixon Dix Lock Coupling, Perfecting N Coupling
Pipe Size | Thread Type | Temperature Range, °F | Each | |
Zinc-Plated Steel | ||||
---|---|---|---|---|
3/8 | NPTF | -40° to 250° | 0000000 | 000000 |
1/2 | NPTF | -40° to 250° | 0000000 | 00000 |
3/4 | NPTF | -40° to 250° | 0000000 | 00000 |
Brass | ||||
3/8 | NPTF | -20° to 175° | 0000000 | 00000 |
1/2 | NPTF | -20° to 175° | 0000000 | 00000 |
3/4 | NPTF | -20° to 175° | 0000000 | 00000 |
303 Stainless Steel | ||||
3/4 | NPTF | -40° to 250° | 0000000 | 00000 |
Replacement Gaskets (10/Pkg.) | 0000000 | Pkg. | 000000 |
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: Not Rated
- Temperature Range: See table
- Attachment Type: Use Band-and-Buckle Clamps
- Specifications Met: MIL-A-A-50431, MIL-C-3486
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
General Purpose Worm-Drive Clamps for Firm Hose and Tube
Easy to use, strong, and versatile, these hose clamps are the most common. Tighten their slotted screw with a screwdriver, hex nut driver, or wrench.
410 stainless steel offers good corrosion resistance.
301, 302, and 305 stainless steel have very good corrosion resistance.
SAE J1508 clamps meet SAE dimensional standards.
Fed. Spec. A-A52506 and MS35842 clamps meet military standards for material and construction.
NAS1924 clamps are manufactured to National Aerospace Standards for performance.
NAS1922 clamps adhere to National Aerospace Standards for the performance and dimensions of lightweight aircraft clamps.
Clamps are for firm plastic and rubber hose and tube. Do not exceed the maximum torque or clamps may be damaged.
Note: When choosing a clamp, measure the outside diameter of your hose or tube with the fitting installed.
For technical drawings and 3-D models, click on a part number.
Clamp ID Range | 301 Stainless Steel with 410 Stainless Steel Screw | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Inch | mm | SAE No. | Temp. Range, ° F | Max. Torque, in.-lbs. | Hex Size | Reusable | Specifications Met | Pkg. Qty. | Pkg. | |
9/16" Band Wd. × 0.023" Band Thick. | ||||||||||
7/16" to 25/32" | 11 to 20 | 6 | -50° to 250° | 30 | 5/16" | Yes | Fed. Spec. A-A52506, MS35842, SAE J1508 | 10 | 00000000 | 000000 |
11/16" to 1 1/4" | 17 to 32 | 12 | -50° to 250° | 30 | 5/16" | Yes | Fed. Spec. A-A52506, MS35842, SAE J1508 | 10 | 00000000 | 00000 |
1 1/16" to 2" | 27 to 51 | 24 | -50° to 250° | 30 | 5/16" | Yes | Fed. Spec. A-A52506, MS35842, SAE J1508 | 10 | 00000000 | 00000 |
1 13/16" to 2 3/4" | 46 to 70 | 36 | -50° to 250° | 30 | 5/16" | Yes | Fed. Spec. A-A52506, MS35842, SAE J1508 | 10 | 00000000 | 00000 |
2 9/16" to 3 1/2" | 65 to 89 | 48 | -50° to 250° | 30 | 5/16" | Yes | Fed. Spec. A-A52506, MS35842, SAE J1508 | 5 | 00000000 | 00000 |
3 5/16" to 4 1/4" | 84 to 108 | 60 | -50° to 250° | 30 | 5/16" | Yes | Fed. Spec. A-A52506, MS35842, SAE J1508 | 5 | 00000000 | 00000 |
4 1/8" to 7" | 105 to 178 | 104 | -50° to 250° | 30 | 5/16" | Yes | Fed. Spec. A-A52506, MS35842, SAE J1508 | 5 | 00000000 | 00000 |
Forged One-Piece Wire Rope Clamps—Not for Lifting
Install these clamps without any specific orientation, slide the nut over the rope and tighten it onto the threaded halves. Their forged fabrication makes these clamps more reliable in critical applications such as tie downs and support lines.
Warning: Test all assemblies for required strength before use. Do not use with coated rope unless the coating is removed.
For technical drawings and 3-D models, click on a part number.
For Wire Rope | Clamp | ||||||||
---|---|---|---|---|---|---|---|---|---|
Dia. | Construction | Lg. | Wd. | Fabrication | Required Torque, ft.-lbs. | Capacity | Specifications Met | Each | |
Zinc-Plated Steel | |||||||||
1/8" | 6 × 19 IWRC 7 × 19 IWRC | 29/32" | 5/8" | Forged | 35 | 90% of the Rope's Capacity | Fed. Spec. FF-C-450, MS16843 | 0000000 | 000000 |
1/4" | 6 × 19 IWRC 7 × 19 IWRC | 1 11/32" | 1" | Forged | 145 | 90% of the Rope's Capacity | Fed. Spec. FF-C-450, MS16843 | 0000000 | 00000 |
5/16" | 6 × 19 IWRC 7 × 19 IWRC | 1 19/32" | 1 1/4" | Forged | 225 | 90% of the Rope's Capacity | Fed. Spec. FF-C-450, MS16843 | 0000000 | 00000 |
3/8" | 6 × 19 IWRC 7 × 19 IWRC | 1 7/8" | 1 7/16" | Forged | 325 | 90% of the Rope's Capacity | Fed. Spec. FF-C-450, MS16843 | 0000000 | 00000 |