Knuckle Joints | McMaster-Carr

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For Shaft Misalignment Type

Construction

Shank Center Length

8,218 Products

Power Transmission

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 Inserts

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

29 products

Rod End Seals

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

16 products

Swivel Joints

Handle shaft misalignment where ball joint rod ends won’t fit; also known as spherical bearings

136 products

U-Joints

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

181 products

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

2,110 products

Machinable Shaft Ends

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

56 products

Shear Couplings

Sever the connection between shafts when there's too much torque to protect parts from breaking

21 products

Shaft Adapters

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

54 products

Gas Spring End Fittings

Connect gas springs to mounting studs and brackets

73 products

Gas Spring Mounts

Attach gas springs to panels, lids, and doors using a bracket or stud

139 products

Hydraulic Cylinder Mounts

Restrain cylinders and secure loads to the end of the rod

4 products

Torque Limiters

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

71 products

Fluid Handling

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

2,318 products

Tube End Plugs

Insert into the ends of tube to keep out dirt and debris

6 products

Hose Fittings

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

388 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

93 products

Building and Machinery Hardware

Hinges

Mount to doors and panels so they can swing open and closed

2 products

T-Slotted Framing Hinges

Install swinging components such as doors, gates, and lids on T-slotted framing structures

127 products

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

19 products

Joint Covers

Shield rotating joints to keep lubricants in and contaminants out

25 products

Material Handling

Turnbuckles

Twist the body or end fittings to adjust the length and tension of attached rope and chain

246 products

Wire Rope End Fittings

Finish wire rope ends with threaded stud, eye, clevis, ball, hook, and other connections

12 products

Screw Jack End Fittings

Thread onto screw jacks to create pivot points with clevis rod ends and other linkages

4 products

Lubricating

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

2 products

Fastening and Joining

Hex Nuts

Handle most general fastening needs

21 products