3/8"-16 Knobs | McMaster-Carr

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Stainless Steel

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Threaded Through Hole

Unthreaded Through Hole

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Stainless Steel

Hub Diameter

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Insert Material

Stainless Steel

Length

Head Height

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Zinc Yellow-Chromate Plated

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Compliant with Exemptions

DFARS Specialty Metals

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501 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

Comfort-Grip Threaded-Stud Knobs

Comfort-Grip Threaded-Stud Knobs

A rubber coating provides a comfortable grip

Comfort-Grip Threaded Through-Hole Knobs

Comfort-Grip Threaded Through-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

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

Vibration-Resistant Threaded Through-Hole Knobs

Vibration-Resistant Threaded Through-Hole Knobs

A nylon insert grips threads to resist loosening

Vibration-Resistant Threaded-Stud Knobs

Vibration-Resistant Threaded-Stud Knobs

An acrylic adhesive adds friction to resist loosening from vibration

Palm-Grip Threaded-Stud Knobs

Palm-Grip Threaded-Stud Knobs

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

Easy-Clean Threaded-Stud Knobs

Easy-Clean Threaded-Stud Knobs

One-piece with no joints to collect dirt or debris

Palm-Grip Threaded-Hole Knobs

Palm-Grip Threaded-Hole Knobs

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

Quick-Lock Threaded Through-Hole Knobs

Quick-Lock Threaded Through-Hole Knobs

Quick to install, position, and remove

Threaded Through-Hole Bar Knobs

Threaded Through-Hole Bar Knobs

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

Left-Hand Threaded-Stud Knobs

Left-Hand Threaded-Stud Knobs

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

Torque-Limiting Knobs

Torque-Limiting Knobs

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

Other Products

Ball Knobs

Provide grip on control levers and push-pull rods

Tighten and loosen by hand without the need for tools

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

Handle Nuts

Attach to threaded shafts to quickly turn the shafts by hand

Machine Handles

Machine Handles

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

Cam Handles

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

Spring Plungers

Spring Plungers

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

Ball-Lever Shafts

Ball-Lever Shafts

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

Crank Handles

The offset handle gives extra leverage to maximize turning force

Pull Handles

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

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