Knobs | McMaster-Carr

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6,523 Products

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

Ball Knobs

Provide grip on control levers and push-pull rods

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

Hand Wheels

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

Machine Handles

Machine Handles

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

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

Door Handles and Knobs

Door Handles and Knobs

Open and close latching doors

Door Knob Converters

Door Knob Converters

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

Door Handle and Knob Guards

Door Handle and Knob Guards

Prevent unauthorized entry by blocking access to the knob

Steering Wheel Knobs

Steering Wheel Knobs

Attach to steering wheels for one-hand operation

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

Control Cables

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

Starter Pull Cords

Starter Pull Cords

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

Spring Handles

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

Damper Control Arms

Damper Control Arms

Connect actuating motors to your duct system to control ventilation dampers

Ratchet Handles

Ratchet Handles

Quickly adjust machine components and valves in tight spaces

Door Push and Pull Plates

Door Push and Pull Plates

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

Cam Latches

Secure drawers, cabinets, mailboxes, and other enclosures

Push Bars

Open doors with a push; often found on emergency exits

Push Bar Retainers

Push Bar Retainers

Hold down push bars so traffic can pass freely through doorways

Pull Cords

Operate doors, vents, skylights, and overhead equipment

Chain Wheels

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

Door Installation Kits

Door Installation Kits

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

Fastening and Joining

Tighten and loosen by hand without the need for tools

Spring Plungers

Spring Plungers

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

Fluid Handling

Valve Handles and Knobs

Valve Handles and Knobs

Replace the handle on most types of valves

Fabricating and Machining

Vise Handles

Replace handles in vises

Retention Knobs

Retention Knobs

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

Measuring and Inspecting

Micrometer Speeder Knobs

Micrometer Speeder Knobs

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

Containers, Storage, and Furniture

Strap Handles

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

Electrical

Manual Switches

Manual Switches

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

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