Knurled Knobs | McMaster-Carr

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System of Measurement

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Material

Stainless Steel

Head Diameter

Grip Style

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Threaded Through Hole

Unthreaded Hole

Unthreaded Through Hole

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Hub Height

Head Height

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Stud Material

Stainless Steel

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Thumb Screw Head Profile

Fastener Head Type

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Insert Material

303 Stainless Steel

Threading

Partially Threaded

RoHS

Compliant with Exemptions

REACH

DFARS Specialty Metals

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

Export Control Classification Number (ECCN)

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1,428 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

Unthreaded-Hole Knobs

Unthreaded-Hole Knobs

Tap custom threads or secure with a set screw

Screw-Head Mount Knobs

Screw-Head Mount Knobs

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

Screw-Head Mount Knob Assortments

Screw-Head Mount Knob Assortments

Keep a convenient selection of knobs on hand

Machinable-Hub Knobs

Machinable-Hub Knobs

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

Easy-Clean Threaded-Stud Knobs

Easy-Clean Threaded-Stud Knobs

One-piece with no joints to collect dirt or debris

Unthreaded Through-Hole Knobs

Unthreaded Through-Hole Knobs

Create custom threads

Palm-Grip Threaded-Stud Knobs

Palm-Grip Threaded-Stud Knobs

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

Comfort-Grip Threaded-Stud Knobs

Comfort-Grip Threaded-Stud Knobs

A rubber coating provides a comfortable grip

Palm-Grip Threaded-Hole Knobs

Palm-Grip Threaded-Hole Knobs

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

Comfort-Grip Threaded-Hole Knobs

Comfort-Grip Threaded-Hole Knobs

A rubber coating provides a comfortable grip

Unthreaded-Hole Knobs with Handle

Unthreaded-Hole Knobs with Handle

A handle makes these easy to turn

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

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

Metal-Detectable Threaded-Hole Knobs

Metal-Detectable Threaded-Hole 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

Other Products

Tighten and loosen by hand without the need for tools

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

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