ASME Retaining Rings | McMaster-Carr

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Retaining Ring Type

Retaining Ring Style

Groove Diameter

Ring Thickness

Material

15-7 PH Stainless Steel

Groove Width

Ring ID

Ring OD

System of Measurement

Inch

Metric

Finish

Phosphate Coated

Zinc Yellow-Chromate Plated

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

Specifications Met

Color

Magnetic Properties

RoHS

Minimum Hardness

DFARS Specialty Metals

Compliant

Exempt

REACH

Compliant

Export Control Classification Number (ECCN)

Passivation

751 Products

Retaining Rings

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.

Inverted External Retaining Rings

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

Self-Locking External Retaining Rings

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

Bowed External Retaining Rings

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

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.

Internal Retaining Rings

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

Inverted Internal Retaining Rings

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

Bowed Internal Retaining Rings

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