E-Rings | McMaster-Carr

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System of Measurement

Groove Diameter

Retaining Ring Style

Retaining Ring Type

Material

Ring Thickness

Groove Width

Ring OD

Ring ID

Finish

Corrosion-Resistant Coated

Oil Coated

Phosphate Coated

Zinc Plated

Zinc Yellow-Chromate Plated

Side-Mount Retaining Ring Style

Performance

Specifications Met

Magnetic Properties

May Be Mildly Magnetic

Color

Thrust Load Capacity

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

REACH

RoHS

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

Yes

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

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)

For 3/16" OD (30 Pieces)

For 3/16" OD (55 Pieces)

For 3/32" OD (300 Pieces)

Export Control Classification Number (ECCN)

EAR99

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1,573 Products

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Retaining Rings

Side-Mount External Retaining Rings

When you can't access the ends of a shaft, install rings from the side

138 products

Reinforced Side-Mount External Retaining Rings

Rings for increased resistance to vibration, shock, and speed

68 products

External Retaining Rings

Secure components on a shaft with our go-to external retaining rings

427 products

Tight-Clearance Side-Mount External Retaining Rings

Fit into tight spaces where other rings can’t

117 products

Push-On External Retaining Rings

Push on the shaft without tools for a grip that forms with no groove

122 products

Side-Mount External Retaining Rings Assortment

Stock up on these rings for when access to the end of the shaft is limited

6 products

Tight-Hold Bowed Side-Mount External Retaining Rings

Install from the side and hold on tight for the long haul

11 products

High-Load Side-Mount External Retaining Rings

The "poodle" profile takes on more force than standard side-mount rings

34 products

Side-Mount, Tapered External, Internal Retaining Rings Assortment

Cover all bases with multiple retaining ring types and styles

1 product

Spiral External Retaining Rings

Install coiled external rings by hand without the need for tools

145 products

High-Load External Retaining Rings

Thick external rings manufactured for high-load applications

86 products

Crimp-On External Retaining Rings

Squeeze tight and crimp these rings into the groove with your everyday pliers

17 products

Self-Locking External Retaining Rings

Thicker than standard rings to grip the shaft without a groove

33 products

Tapered and Side-Mount External Retaining Rings Assortment

Grab an assortment of tapered and side-mount external retaining rings

1 product

Speared Ends External Retaining Rings

Grip the speared ends for more leverage and easier installation and removal

43 products

Push-On External Retaining Rings Assortment

A range of external retaining rings that don't require a groove for installation

1 product

Clip-On External Retaining Rings

A tab locks them into place for quick assembly, even in imprecise grooves

8 products

High-Load Spiral External Retaining Rings

Stand up to stronger forces with thick external spiral rings

153 products

External Retaining Rings Assortment

Stock up on our go-to external retaining rings in a range of sizes

11 products

Constant-Section External Retaining Rings

A low profile without taper for uniform stress distribution

8 products

External and Internal Retaining Rings Assortment

External and internal tapered rings in a range of sizes

3 products

Tight-Clearance Inverted External Retaining Rings

The lugs on these rings point inward for better clearance in tight assemblies

43 products

Mil. Spec. External Retaining Rings

Manufactured and tested to strict U.S. military standards

41 products

Tight-Hold Bowed External Retaining Rings

External rings that hold on tight for longer than standard

21 products

Spiral External and Internal Retaining Rings Assortment

Wind spiral retaining rings of many sizes into grooves

2 products

Other Products

Retaining Ring Pliers

Install and remove rings inside a bore or around a shaft

52 products

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

25 products

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

17 products