Clip Rings | McMaster-Carr

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

REACH Compliant

	Pin Type Pin Type


Quick Release	Cotter

	End Type End Type


Spring-Loaded Ball	Through Hole

	Specifications Met Specifications Met

	Magnetic Properties Magnetic Properties

Magnetic

May Be Mildly Magnetic

Nonmagnetic

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4,343 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.

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.

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.

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.

Heavy Duty Spiral External Retaining Rings

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

Spiral External Retaining Rings

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

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 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.

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.

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.

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.

Clip-On External Retaining Rings

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

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.

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.

Internal Teeth Retaining Rings

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

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.

Cotter Pins

Split Rings

Also known as key rings, twist these rings into place to secure clevis pins, connect components, or add a pull handle. They don't have the sharp ends of other cotter pins.

Cotter Rings

Twist these rings on to lock pins in place. They don't have the sharp ends of other cotter pins.

Quick-Release Pins

Ring-Grip Quick-Release Pins

The smooth ring handle on these pins won't catch on parts. A spring-loaded, nonlocking retaining ball pops out when the pin is pushed through a hole, and retracts when the pin is pulled out.

Strong-Hold Quick-Release Pins

Two spring-loaded balls give these pins more holding power than quick-release pins with only one retaining ball. The balls pop out when the pin is pushed into a hole, and retract when the pin is pulled out.

Ring-Grip Shoulder-Style Quick-Release Pins

The smooth ring handle on these pins won't catch on parts. The shoulder keeps a portion of the pin outside the hole and makes them easy to grab.

T-Handle Locking Quick-Release Pins

For a more secure hold than standard quick-release pins, these pins lock in place until you push the button to release the spring-loaded retaining balls.

Choose-a-Color T-Handle Locking Quick-Release Pins

Use these pins for visibility or to color-code processes. For a more secure hold than standard quick-release pins, they lock in place until you push the button to release the spring-loaded retaining balls.

L-Handle Locking Quick-Release Pins

When there isn't enough room for a T-handle, an L-handle saves space but is still easy to grip. For a more secure hold than standard quick-release pins, these pins lock in place until you push the button to release the spring-loaded retaining balls.

Knob-Grip Locking Quick-Release Pins

The extra height and smaller width of the grip make the button more accessible in tight spaces. For a more secure hold than standard quick-release pins, these pins lock in place until you push the button to release the spring-loaded retaining balls.

T-Handle Super-Corrosion-Resistant
Locking Quick-Release Pins

A T-handle makes these pins easy to grip. Made entirely of stainless steel, they stand up to corrosive enviroments. Pins lock in place until you push the button to release the spring-loaded retaining balls.

Strong-Hold Super-Corrosion-Resistant
Locking Quick-Release Pins

Four spring-loaded retaining balls provide extra holding power. Made entirely of stainless steel, these pins stand up to corrosive enviroments. They lock in place until you push the button to release the spring-loaded retaining balls.

Ball-and-Cotter Double-Locking Quick-Release Pins

These pins lock in place until you push the button to release the spring-loaded retaining balls, and can also be secured with a cotter pin for longer-term holding. Two-step locking prevents accidental removal.

T-Handle Locking Push-Pull Quick-Release Pins

Also known as double-acting pins, these pins lock in place until you push or pull the handle to release the spring-loaded retaining balls. The T-handle is easy to grip.

Ring-Grip Locking Push-Pull Quick-Release Pins

Also known as double-acting pins, these pins lock in place until you push the button or pull the ring to release the spring-loaded retaining balls. The smooth ring handle won't catch on parts.

Fastener Assortments

External, Internal, and Side-Mount
Retaining Ring Assortments

These assortments include pliers to install external and internal rings.

External and Internal Retaining Ring Assortments

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 Side-Mount Retaining Ring Assortments

Assortments include pliers to install external rings.

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.

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.