Unthreaded Hole Knobs | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Hole Diameter Hole Diameter

	Head Diameter Head Diameter

	Material Material

	Grip Style Grip Style


Knurled	Ribbed

Eight Arm	Four Arm

Ball	Seven Arm

Smooth	Six Arm

Five Arm	Single Arm

Three Arm	Two Arm

	Hole Shape Hole Shape


Round	Square

	Hole Depth Hole Depth

	Hub Diameter Hub Diameter

	Set Screw Included Set Screw Included

Yes

	Hub Height Hub Height

	For Shaft Type For Shaft Type

Round

D-Profile

	Head Height Head Height

	Head Width Head Width

	Color Color

	Black		Clear
	Orange		Red
	Yellow

	Set Screw Thread Size Set Screw Thread Size

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Hole Width Hole Width

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Minimum Temperature Minimum Temperature

	Maximum Temperature Maximum Temperature

	Finish Finish

Black Oxide

Rubber Coated

Anodized

	Insert Material Insert Material

Brass

Steel

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238 Products

Knobs

Unthreaded-Hole Knobs

Tap custom threads or secure with a set screw to provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery.

Unthreaded-Hole Knobs with Handle

A handle makes these knobs easy to turn. Tap custom threads or secure with a set screw to provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery.

Unthreaded Through-Hole Knobs

Create custom threads or secure with a set screw to provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery. Long shafts can pass through these knobs for mounting versatility.

Square-Through-Hole Knobs

Primarily used on spigot valves, slide these knobs over valves with a square stem and secure them in place with your fastener.

Indicating Knobs

Control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Dual-Control Comfort-Grip Indicating Knobs

These dual-control knobs operate independently to control two settings. They have a rubber coating for a comfortable grip. Use them on devices with round shafts to view settings at a glance with a pointer.

Comfort-Grip Indicating Knobs

A rubber coating or construction provides a comfortable grip. Use these knobs to control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Turn-Counting Indicating Knobs

For monitoring the number of shaft turns on instrumentation, these knobs have easy-to-read scales or digits for quick and accurate readings. Use them on devices with round shafts.

Choose-a-Color Indicating Knobs

Quickly identify equipment controls and components by their color. Use these knobs to control devices with round shafts and view settings at a glance with a pointer.

Unthreaded-Hole Ball Knobs

Tap custom threads or drill a hole in the side of the knob to secure with a set screw. These easy-to-grip ball knobs are good for control levers and push-pull rods.

Unthreaded Through-Hole Pull Knobs

Fasten these knobs directly to the front of your surface to open and close a variety of doors and drawers, including those on furniture, machines, and equipment.