Shaft Rings | McMaster-Carr

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System of Measurement

Retaining Ring Type

Retaining Ring Style

Groove Diameter

Material

Ring Thickness

Ring ID

Ring OD

Groove Width

Finish

Corrosion-Resistant Coated

Zinc Yellow-Chromate Plated

Specifications Met

Magnetic Properties

May Be Mildly Magnetic

Nonmagnetic

Thrust Load Capacity

Less than 10,000 lbf

10,000 lbf to 19,999 lbf

20,000 lbf to 99,999 lbf

100,000 lbf to 199,999 lbf

200,000 lbf or greater

RoHS

REACH

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Color

Passivation

Side-Mount External Retaining Rings Included

For 1 3/16" OD (12 Pieces)

For 1/16" OD (200 Pieces)

For 1/2" OD (20 Pieces)

For 1/2" OD (25 Pieces)

For 1/2" OD (40 Pieces)

For 1/2" OD (50 Pieces)

For 1/4" OD (25 Pieces)

For 1/4" OD (30 Pieces)

For 1/4" OD (50 Pieces)

For 1/4" OD (90 Pieces)

For 1/8" OD (150 Pieces)

For 1/8" OD (30 Pieces)

For 3 mm OD (20 Pieces)

For 3 mm OD (40 Pieces)

For 3/16" OD (100 Pieces)

Length

Minimum Installation Depth

2,363 Products

External Retaining Rings

Open these rings, pass them over the end of a shaft, and release to spring into the groove.

Heavy Duty External Retaining Rings

Thicker than standard external retaining rings, these rings withstand greater force.

Mil. Spec. External Retaining Rings

These rings meet military specification MS 16624.

Self-Locking External Retaining Rings

No groove is required for these rings—their thick profile helps them grip the shaft.

Inverted External Retaining Rings

For a smooth profile and better clearance than standard external retaining rings, the lugs on these rings point inward.

Bowed External Retaining Rings

The curved design of these rings works like a spring, taking up play for a tight hold.

Spiral External Retaining Rings

These coiled rings can be wound into place on a shaft without tools.

Heavy Duty Spiral External Retaining Rings

Thicker than standard spiral rings, these rings withstand greater forces.

Single-Turn Spiral External Retaining Rings

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

Side-Mount External Retaining Rings

Also known as E-style rings.

Low-Clearance Side-Mount External Retaining Rings

Also known as C-style and crescent rings, these rings have a small shoulder to fit in tight spaces.

Heavy Duty Side-Mount External Retaining Rings

These rings are reinforced to withstand faster rotation than other side‐mount retaining rings. Also known as reinforced E‐style rings.

Bowed Side-Mount External Retaining Rings

Also known as bowed E-style rings, these have a curved design that works like a spring, taking up play for a tight hold.

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.

Push-On External Retaining Rings

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

Flanged Push-On External Retaining Rings

The wide flange provides better load distribution than standard external push rings and can be used to cover oversized holes. Also known as thread cutting nuts.

Push-On Retaining Caps

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

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.

Speared Ends External Retaining Rings

Often used with small engines, heavy equipment, and power transmission, these external retaining rings have speared ends to help you install and remove them.

Low-Clearance External Retaining Rings

Also known as constant-section rings, these rings have open ends and a profile that does not taper like other external retaining rings. Use them with linear bearings on support rail shafts.

Clip-On External Retaining Rings

Slide these rings into a groove near the end of the shaft and the tab locks them in place.

Crimp-On External Retaining Rings

Also known as X-washers, place these rings into the groove and squeeze tight with pliers to form a 360° closure.

Internal Retaining Rings

Squeeze these rings to place them in the groove inside a bore or housing.

Internal Teeth Retaining Rings

With teeth along the inside, these retaining rings hold chamfered shafts inside the housing of your equipment.

Inverted Internal Retaining Rings

For a smooth bore and better clearance than standard internal retaining rings, the lugs on these rings face outward.

Heavy Duty Internal Retaining Rings

Thicker and stronger than standard internal retaining rings, these withstand greater thrust loads.

Bowed Internal Retaining Rings

The curved design of these rings works like a spring, taking up play for a tight hold.

Single-Turn Spiral Internal Retaining Rings

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

Spiral Internal Retaining Rings

These coiled rings can be wound into place inside a bore or housing without tools.

Heavy Duty Spiral Internal Retaining Rings

Thicker than standard spiral rings, these rings withstand greater forces.

Push-On Internal Retaining Rings

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

Fastener Assortments

External, Internal, and Side-Mount
Retaining Ring Assortments

These assortments include pliers to install external and internal rings.

External and Internal Spiral
Retaining Ring Assortments

Wind these retaining rings into a groove—no tools required for installation.

External and Internal Retaining Ring Assortments

Assortments include pliers to install external and internal rings.

External and Side-Mount
Retaining Ring Assortments

Assortments include pliers to install external rings.

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.

External Retaining Ring Assortments

Pull these rings open with retaining ring pliers, pass over the end of a shaft, and release to spring into a groove.

Internal Retaining Ring Assortments

Pull ring ends together with retaining ring pliers and place into the bore of a shaft or housing.

External Retaining Rings

External Retaining Rings

Heavy Duty External Retaining Rings

Mil. Spec. External Retaining Rings

Self-Locking External Retaining Rings

Inverted External Retaining Rings

Bowed External Retaining Rings

Spiral External Retaining Rings

Heavy Duty Spiral External Retaining Rings

Single-Turn Spiral External Retaining Rings

Side-Mount External Retaining Rings

Low-Clearance Side-Mount External Retaining Rings

Heavy Duty Side-Mount External Retaining Rings

Bowed Side-Mount External Retaining Rings

Wide-Grip Side-Mount External Retaining Rings

Push-On External Retaining Rings

Flanged Push-On External Retaining Rings

Push-On Retaining Caps

Rectangular Push-On External Retaining Rings

Speared Ends External Retaining Rings

Low-Clearance External Retaining Rings

Clip-On External Retaining Rings

Crimp-On External Retaining Rings

Internal Retaining Rings

Internal Retaining Rings

Internal Teeth Retaining Rings

Inverted Internal Retaining Rings

Heavy Duty Internal Retaining Rings

Bowed Internal Retaining Rings

Single-Turn Spiral Internal Retaining Rings

Spiral Internal Retaining Rings

Heavy Duty Spiral Internal Retaining Rings

Push-On Internal Retaining Rings

Fastener Assortments

External, Internal, and Side-MountRetaining Ring Assortments

External and Internal SpiralRetaining Ring Assortments

External and Internal Retaining Ring Assortments

External and Side-MountRetaining Ring Assortments

Side-Mount External Retaining Ring Assortments

External Retaining Ring Assortments

Internal Retaining Ring Assortments

Internal Push Ring Assortments

External Push Ring Assortments

External, Internal, and Side-Mount
Retaining Ring Assortments

External and Internal Spiral
Retaining Ring Assortments

External and Side-Mount
Retaining Ring Assortments