Knobs | McMaster-Carr

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Adjustable Handles

Ball-Lever Shafts

Cam Locks and Latches

Damper Control Arms

Door Handle and Knob Guards

Door Handles and Knobs

Door Installation Kits

Door Knob Converters

Door Push and Pull Plates

Emergency Stop Switches

Indicating Knobs

System of Measurement

Thread Size

Grip Style

Material

Stainless Steel

Head Diameter

Stud Length

Color

Hub Height

Hub Diameter

Length

Stud Material

Stainless Steel

Hole Diameter

Screw Size

Head Height

Insert Material

Stainless Steel

Thread Direction

Handle Style

Finish

Aluminum Coated

Thread Pitch

Thread Depth

RoHS

Compliant with Exemptions

REACH

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

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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6,592 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

Threaded Through-Hole Knobs

Threaded Through-Hole Knobs

Long shafts can thread through these knobs for mounting versatility

Choose-a-Color Threaded-Stud Knobs

Choose-a-Color Threaded-Stud Knobs

Identify equipment controls and components at a glance by their color

Unthreaded-Hole Knobs

Unthreaded-Hole Knobs

Tap custom threads or secure with a set 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-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 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

Comfort-Grip Threaded-Hole Knobs

Comfort-Grip Threaded-Hole Knobs

A rubber coating provides a comfortable grip

Machinable-Hub Knobs

Machinable-Hub Knobs

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

Unthreaded Through-Hole Knobs

Unthreaded Through-Hole Knobs

Create custom threads

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

Vibration-Resistant Threaded-Stud Knobs

Vibration-Resistant Threaded-Stud Knobs

An acrylic adhesive adds friction to resist loosening from vibration

Easy-Clean Threaded-Stud Knobs

Easy-Clean Threaded-Stud Knobs

One-piece with no joints to collect dirt or debris

Palm-Grip Threaded-Stud Knobs

Palm-Grip Threaded-Stud Knobs

The domed top allows you to firmly hold these knobs in your palm

Palm-Grip Threaded-Hole Knobs

Palm-Grip Threaded-Hole Knobs

The domed top allows you to firmly hold these knobs in your palm

Tethered Threaded-Stud Knobs

Tethered Threaded-Stud Knobs

Never lose these knobs—tether them to equipment

Quick-Lock Threaded Through-Hole Knobs

Quick-Lock Threaded Through-Hole Knobs

Quick to install, position, and remove

Sanitary Threaded-Hole Knobs

Sanitary Threaded-Hole Knobs

Designed for sanitary environments

Unthreaded-Hole Knobs with Handle

Unthreaded-Hole Knobs with Handle

A handle makes these easy to turn

Tethered Threaded-Hole Knobs

Tethered Threaded-Hole Knobs

Never lose these knobs—tether them to equipment

Machinable-Hub Knobs with Handle

Machinable-Hub Knobs with Handle

A handle makes these knobs easy to turn

Torque-Limiting Knobs

Torque-Limiting Knobs

Set torque with a hex key to prevent overtightening that can damage equipment

Palm-Grip Machinable-Hub Knobs

Palm-Grip Machinable-Hub Knobs

The domed top allows you to firmly hold these knobs in your palm

Metal-Detectable Threaded-Stud Knobs

Metal-Detectable Threaded-Stud Knobs

Detect if a piece breaks off into your food processing line

Metal-Detectable Threaded-Hole Knobs

Metal-Detectable Threaded-Hole Knobs

Detect if a piece breaks off into your food processing line

Threaded Through-Hole Bar Knobs

Threaded Through-Hole Bar Knobs

Add a bar for maximum leverage when tightening on a threaded stud

Oversized-Grip Screw-Head Mount Knobs

Oversized-Grip Screw-Head Mount Knobs

Convert screws into knobs so large you can grip them with heavy work gloves

Left-Hand Threaded-Stud Knobs

Left-Hand Threaded-Stud Knobs

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

Screw-Head Mount Knobs with Messages

Screw-Head Mount Knobs with Messages

Use these knobs to display important messages

Machinable-Hub Bar Knobs

Machinable-Hub Bar Knobs

Weld on or create your own holes and add a bar for maximum leverage when tightening

Other Products

Ball Knobs

Provide grip on control levers and push-pull rods

Tighten and loosen by hand without the need for tools

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Adjustable Handles

Adjustable Handles

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

Lever Handles

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

Pull Handles and Knobs

Pull Handles and Knobs

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

Cam Handles

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

Machine Handles

Machine Handles

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

Valve Handles and Knobs

Valve Handles and Knobs

Replace the handle on most types of valves

Hand Wheels

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

Spring Plungers

Spring Plungers

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

Steering Wheel Knobs

Steering Wheel Knobs

Attach to steering wheels for one-hand operation

Door Handles and Knobs

Door Handles and Knobs

Open and close latching doors

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

Crank Handles

The offset handle gives extra leverage to maximize turning force

Ball-Lever Shafts

Ball-Lever Shafts

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

Mechanical Control Cables

Mechanical Control Cables

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

Door Knob Converters

Door Knob Converters

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

Cam Locks and Latches

Cam Locks and Latches

Secure drawers, cabinets, mailboxes, and other enclosures

Starter Pull Cords

Starter Pull Cords

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

Vise Handles

Replace handles in vises

Micrometer Speeder Knobs

Micrometer Speeder Knobs

Color code micrometers by calibration date, precision, or other criteria

Spring Handles

The wire coils dissipate heat to keep furnace, grill, and stove handles cool to the touch

Faucet Handles

Fit most faucet cartridges to turn water on and off

Ratchet Handles

Ratchet Handles

Quickly adjust machine components and valves in tight spaces

Pull Cords

Operate doors, vents, skylights, and overhead equipment

Damper Control Arms

Damper Control Arms

Connect actuating motors to your duct system to control ventilation dampers

Door Handle and Knob Guards

Door Handle and Knob Guards

Prevent unauthorized entry by blocking access to the knob

Retention Knobs

Retention Knobs

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

Chain Wheels

Add a pull chain to operate overhead doors, hatches, and valves

Strap Handles

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

Push-Button Switches

Push-Button Switches

Our most common switch type actuates circuits with the push of a button

Door Push and Pull Plates

Door Push and Pull Plates

Protect doors from wear while adding an easy-to-open handle

Door Installation Kits

Door Installation Kits

Complete your door installation with a handle or knob, strike plate, and hinges

Emergency Stop Switches

Emergency Stop Switches

Cut power to equipment during emergencies

Push Bars

Open doors with a push; often found on emergency exits

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

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