Plastic Knobs | McMaster-Carr

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Stainless Steel

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Stainless Steel

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DFARS Specialty Metals

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Stainless Steel

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Fiberglass-Reinforced Nylon

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How can we improve?

2,334 Products

Knobs

Threaded-Stud Knobs

Threaded-Stud Knobs

Mount these knobs into a threaded hole

Threaded-Hole Knobs

Threaded-Hole Knobs

Install on a threaded stud to provide a secure grip

Choose-a-Color Threaded-Stud Knobs

Choose-a-Color Threaded-Stud Knobs

Identify equipment controls and components at a glance by their color

Threaded Through-Hole Knobs

Threaded Through-Hole Knobs

Long shafts can thread through these knobs for mounting versatility

Comfort-Grip Threaded-Stud Knobs

Comfort-Grip Threaded-Stud Knobs

A rubber coating provides a comfortable grip

Screw-Head Mount Knobs

Screw-Head Mount Knobs

To build a custom knob or thumb screw, pair with a hex or socket head screw

Choose-a-Color Threaded-Hole Knobs

Choose-a-Color Threaded-Hole Knobs

Identify equipment controls and components at a glance by their color

Comfort-Grip Threaded-Hole Knobs

Comfort-Grip Threaded-Hole Knobs

A rubber coating provides a comfortable grip

Choose-a-Color Threaded Through-Hole Knobs

Choose-a-Color Threaded Through-Hole Knobs

Identify equipment controls and components at a glance by their color

Comfort-Grip Threaded Through-Hole Knobs

Comfort-Grip Threaded Through-Hole Knobs

A rubber coating provides a comfortable grip

Unthreaded-Hole Knobs

Unthreaded-Hole Knobs

Tap custom threads or secure with a set screw

Vibration-Resistant Threaded-Stud Knobs

Vibration-Resistant Threaded-Stud Knobs

An acrylic adhesive adds friction to resist loosening from vibration

Vibration-Resistant Threaded Through-Hole Knobs

Vibration-Resistant Threaded Through-Hole Knobs

A nylon insert grips threads to resist loosening

Screw-Head Mount Knob Assortments

Screw-Head Mount Knob Assortments

Keep a convenient selection of knobs on hand

Tethered Threaded-Stud Knobs

Tethered Threaded-Stud Knobs

Never lose these knobs—tether them to equipment

Unthreaded Through-Hole Knobs

Unthreaded Through-Hole Knobs

Create custom threads

Metal-Detectable Threaded-Hole Knobs

Metal-Detectable Threaded-Hole Knobs

Detect if a piece breaks off into your food processing line

Quick-Lock Threaded Through-Hole Knobs

Quick-Lock Threaded Through-Hole Knobs

Quick to install, position, and remove

Tethered Threaded-Hole Knobs

Tethered Threaded-Hole Knobs

Never lose these knobs—tether them to equipment

Metal-Detectable Threaded-Stud Knobs

Metal-Detectable Threaded-Stud Knobs

Detect if a piece breaks off into your food processing line

Screw-Head Mount Knobs with Messages

Screw-Head Mount Knobs with Messages

Use these knobs to display important messages

Left-Hand Threaded-Stud Knobs

Left-Hand Threaded-Stud Knobs

Less likely to loosen from counterclockwise motion than right-hand threads

Machinable-Hub Knobs

Machinable-Hub Knobs

Mill specific holes or keyways in the hub, or weld in place

Other Products

Ball Knobs

Provide grip on control levers and push-pull rods

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Tighten and loosen by hand without the need for tools

Lever Handles

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

Adjustable Handles

Adjustable Handles

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

Cam Handles

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

Pull Handles and Knobs

Pull Handles and Knobs

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

Spring Plungers

Spring Plungers

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

Machine Handles

Machine Handles

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

Steering Wheel Knobs

Steering Wheel Knobs

Attach to steering wheels for one-hand operation

Mechanical Control Cables

Mechanical Control Cables

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

Crank Handles

The offset handle gives extra leverage to maximize turning force

Door Knob Converters

Door Knob Converters

Convert a knob into an easy-to-open handle without replacing the hardware

Hand Wheels

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

Starter Pull Cords

Starter Pull Cords

Replace pull cords on generators, lawn mowers, and other machines

Cam Latches

Secure drawers, cabinets, mailboxes, and other enclosures

Valve Handles and Knobs

Valve Handles and Knobs

Replace the handle on most types of valves

Strap Handles

Wrap around bundles and hard-to-grip objects for a more convenient carry

Pull Cords

Operate doors, vents, skylights, and overhead equipment

Manual Switches

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

Faucet Handles

Fit most faucet cartridges to turn water on and off

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)