Coupling Shafts | McMaster-Carr

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System of Measurement

Shaft Diameter

Shaft Type

Material

Construction

Overall Length

Shaft Mount Type

For Shaft Misalignment Type

Keyway Width

For Rotary Motion

Length

Shaft Coupling Flexibility

Keyway Depth

Maximum Torque

Less than 10,000 in·lbf

10,000 in·lbf to 19,999 in·lbf

20,000 in·lbf to 29,999 in·lbf

30,000 in·lbf to 39,999 in·lbf

40,000 in·lbf or greater

Not Rated

Maximum Rotation Speed

RoHS

Compliant with Exemptions

Not Compliant

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

REACH

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Clamping Screw Material

Stainless Steel

Steel

Export Control Classification Number (ECCN)

Shank Thread Size

Diameter

Set Screw Material

4,812 Products

Power Transmission

Flexible Shaft Couplings

Connect two shafts that are misaligned to transfer rotary motion from one to the other

1,632 products

Rigid Shaft Couplings

Join two shafts that are aligned and handle higher torque than flexible shaft couplings

696 products

Shaft Adapters

Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends

54 products

U-Joints

Transfer torque between shafts at an angle; handle more torque and misalignment than flexible shafts

181 products

Machinable Shaft Ends

Mill custom pulleys, threaded hubs, sprockets, collars, and sensor targets and mount them to shafts

56 products

Flexible Shafts

Snake around curves and obstructions to transmit rotary motion along any path

41 products

Rigid Shaft Coupling Covers

Shield rigid shaft couplings from dirt, water, and lubricants to extend their life

13 products

Torque Limiters

Keep torque at or below a set limit to control tension or braking or protect machinery from overload

127 products

Brakes

Control how much and how quickly your drive system slows down

7 products

Clutches

Start and stop the transmission of power to machinery

58 products

Clutch/Brakes

Control when to transmit power with a clutch and when to hold a load in place with a brake

5 products

Rod Ends

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

1,613 products

Rod End Nuts

Attach to rods, pipe, and tubing to make pivot and hinge points

8 products

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

16 products

Rod End Inserts

Attach to rod ends to increase the amount of misalignment they can handle

29 products

Pulley and Sprocket Bushings

Mount between a rotating shaft and equipment to secure the shaft and reduce vibration

79 products

Fastening and Joining

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

34 products

Driver Extension Adapters

Create a tool that’s as long as you need to reach deeply recessed fasteners

44 products

Building and Machinery Hardware

Joint Covers

Shield rotating joints to keep lubricants in and contaminants out

18 products

Mechanical Control Cables

Weave around obstructions to operate valves, throttles, and other machinery from a distance

97 products