Metric External Retaining Rings | McMaster-Carr

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System of Measurement

OD

Groove Diameter

Retaining Ring Style

Constant Section

Retaining Ring Type

Ring Thickness

Material

Stainless Steel

Groove Width

Ring ID

ID

Finish

Phosphate Coated

Zinc Yellow-Chromate Plated

Ring OD

Specifications Met

Minimum Hardness

Color

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

Magnetic Properties

May Be Mildly Magnetic

Hardness

RoHS

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

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

Passivation

Side-Mount External Retaining Rings Included

For 3 mm OD (20 Pieces)

For 3 mm OD (40 Pieces)

For 4 mm OD (20 Pieces)

For 4 mm OD (40 Pieces)

For 5 mm OD (20 Pieces)

For 5 mm OD (40 Pieces)

For 6 mm OD (20 Pieces)

For 6 mm OD (40 Pieces)

For 7 mm OD (20 Pieces)

For 7 mm OD (30 Pieces)

For 8 mm OD (20 Pieces)

For 8 mm OD (30 Pieces)

For 9 mm OD (20 Pieces)

For 10 mm OD (10 Pieces)

For 10 mm OD (20 Pieces)

For 11 mm OD (20 Pieces)

For 12 mm OD (10 Pieces)

For 13 mm OD (10 Pieces)

Performance

Corrosion Resistant

Tight Clearance

How can we improve?

579 Products

Retaining Rings

External Retaining Rings

External Retaining Rings

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

Side-Mount External Retaining Rings

Side-Mount External Retaining Rings

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

High-Load External Retaining Rings

High-Load External Retaining Rings

Thick external rings manufactured for high-load applications

Spiral External Retaining Rings

Spiral External Retaining Rings

Install coiled external rings by hand without the need for tools

Tight-Clearance Side-Mount External Retaining Rings

Tight-Clearance Side-Mount External Retaining Rings

Fit into tight spaces where other rings can’t

Push-On External Retaining Rings

Push-On External Retaining Rings

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

Reinforced Side-Mount External Retaining Rings

Reinforced Side-Mount External Retaining Rings

Rings for increased resistance to vibration, shock, and speed

Speared Ends External Retaining Rings

Speared Ends External Retaining Rings

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

Tight-Clearance Inverted External Retaining Rings

Tight-Clearance Inverted External Retaining Rings

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

High-Load Spiral External Retaining Rings

High-Load Spiral External Retaining Rings

Stand up to stronger forces with thick external spiral rings

Clip-On External Retaining Rings

Clip-On External Retaining Rings

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

Side-Mount, Tapered External, Internal Retaining Rings Assortment

Side-Mount, Tapered External, Internal Retaining Rings Assortment

Cover all bases with multiple retaining ring types and styles

Self-Locking External Retaining Rings

Self-Locking External Retaining Rings

Thicker than standard rings to grip the shaft without a groove

External Retaining Rings Assortment

External Retaining Rings Assortment

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

Side-Mount External Retaining Rings Assortment

Side-Mount External Retaining Rings Assortment

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

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