Machine Knobs | McMaster-Carr

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5,025 Products

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

1,345 products

Ball Knobs

Provide grip on control levers and push-pull rods

269 products

Indicating Knobs

Control devices and view settings at a glance

89 products

Lever Handles

Replace gear levers or attach to cranks and hand wheels to make them easier to turn

105 products

Hand Wheels

Rotate to adjust machinery, valves, drill presses, and other equipment

336 products

Machine Handles

Arms give you extra leverage to secure and position jigs, fixtures, and other equipment

33 products

Adjustable Handles

Lift and turn to easily position and tighten components; also called clamping handles

759 products

Steering Wheel Knobs

Attach to steering wheels for one-hand operation

6 products

Crank Handles

The offset handle gives extra leverage to maximize turning force

102 products

Pull Knobs

Use a knob to open and close cabinets, drawers, and doors

33 products

Fastening and Joining

Thumb Screws

Tighten and loosen by hand without the need for tools

1,551 products

Spring Plungers

Apply accurate, consistent pressure for positioning, indexing, and ejecting parts

256 products

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

10 products

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

1 product

Fluid Handling

Valve Handles and Knobs

Replace the handle on most types of valves

41 products

Fabricating and Machining

Vise Handles

Replace handles in vises

5 products

Retention Knobs

Attach tool holders such as collet chucks and end mill holders to your CNC machine’s spindle

94 products