1/2"-20 Couplings | McMaster-Carr

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System of Measurement

Thread Size

Material

Gender

Length

Nut Type

Threading

Threaded on Both Ends

Thread Type

UN/UNF (SAE Straight)

Shape

Hex Length

Thread Length

Thread Direction

Right Hand and Left Hand

Width

Finish

Hex Size

Fastener Strength Grade/Class

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

Fitting Type

DFARS Specialty Metals

Thread Fit

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

Fastener Strength Rating

597 Products

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

15 products

Thread Adapters

Join threads of a different type, size, and gender

223 products

Standoffs

Separate, position, or connect components in assemblies

8 products

Threaded Rod Collars

Hold and position parts on a threaded rod

4 products

Fluid Handling

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

92 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

8 products

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

5 products

Power Transmission

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

79 products

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

82 products

Rod Alignment Couplers

Reduce wear on bearings and seals by flexing when the cylinder and load aren't precisely even

4 products

Precision Lead Screw Nuts

Pair with precision lead screws for accurate starts and stops in your assembly

2 products

Electrical Power, Networking, and Controlling

Metric Circular Connectors

Plugs, sockets, receptacles, and adapters for equipment with metric connections

41 products