Steel Shaft Caps | McMaster-Carr

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	Material Material

Plastic

Steel

	Insert Material Insert Material

Steel

	System of Measurement System of Measurement

Inch

Metric

	For OD For OD

	Retaining Ring Style Retaining Ring Style


Push On	Side Mount

Spiral

	Finish Finish

Zinc Plated

Black Ultra-Corrosion-
Resistant Coated

Zinc Yellow-Chromate Plated

	Retaining Ring Type Retaining Ring Type

	External
	Internal

	Ring OD Ring OD

	For Groove Diameter For Groove Diameter

	OD OD

	Ring Thickness Ring Thickness

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

	For Groove Width For Groove Width

	Magnetic Properties Magnetic Properties

Magnetic

	Minimum Hardness Minimum Hardness

	Height Height

	For ID For ID

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

REACH Compliant

	Color Color

	Black		Red
	White		Yellow
	Orange

	For Shape For Shape


Round	Square

	Thrust Load Capacity Thrust Load Capacity

Less than 1,000 lbs.

1,000 to 1,999 lbs.

2,000 to 9,999 lbs.

10,000 to 19,999 lbs.

20,000 lbs. or greater

	Thread Size Thread Size

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225 Products

Fasteners

Push-On Retaining Caps

Use these caps to hold components in place and protect shaft ends.

Push-On External Retaining Rings

No groove required—press these rings onto the end of a shaft for a firm grip.

Rectangular Push-On External Retaining Rings

Also known as flat-style speed nuts, these have a large surface to distribute loads better than standard and flanged external push rings.

Side-Mount External Retaining Rings

Also known as E-style rings.

Wide-Grip Side-Mount External Retaining Rings

Also known as poodle rings, these thick rings have "ears" that form a large retaining surface to withstand stronger forces than other side-mount retaining rings.

Single-Turn Spiral External Retaining Rings

Slide these rings into place with one twist—no tools required—for applications with high thrust loads.

Push-On Internal Retaining Rings

No groove required—these rings have teeth that firmly grip the bore.

Single-Turn Spiral Internal Retaining Rings

Slide these rings into place by hand with a single twist for applications with high thrust loads.

Rectangular Push Nuts

Also known as flat-style speed nuts, these have large sides, so they're easy to push over threads by hand.

Rectangular Push Nuts for Tapping Screws

Side-Mount External Retaining Ring Assortments

Also known as E-Style and C-style rings, slide these into the groove from the side of the shaft. They provide a wider shoulder than other external retaining rings for a larger retaining surface.

Caps and Plugs

Rebar Caps

Keep personnel safe from protruding rebar and pipe. Made of rigid plastic, these durable safety caps are bright orange or yellow for excellent visibility.

Metal Square Plugs

More durable than plastic plugs, these provide the most protection from abrasion and impact. Use them to eliminate sharp edges and create a finished look on metal fence and machine-guard posts. Drive them in place with a hammer for a secure fit.

Tag Rings

Loop these rings onto tags.