Metric Knobs | McMaster-Carr

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Round-Head Thumb Screw Profile

1,353 Products

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

284 products

Ball Knobs

Provide grip on control levers and push-pull rods

41 products

Adjustable Handles

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

323 products

Lever Handles

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

39 products

Pull Handles and Knobs

Open and close cabinets, drawers, and doors on machines and equipment

181 products

Indicating Knobs

Control devices and view settings at a glance

6 products

Cam Handles

For fast clamping, push down on the handle to draw two parts together

47 products

Machine Handles

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

4 products

Crank Handles

The offset handle gives extra leverage to maximize turning force

29 products

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

8 products

Ball-Lever Shafts

Attach a ball knob to create a custom handle for operating machinery

8 products

Fastening and Joining

Thumb Screws

Tighten and loosen by hand without the need for tools

336 products

Spring Plungers

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

29 products

Fabricating and Machining

Retention Knobs

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

10 products