Cotter Pins | McMaster-Carr

Filter by

Product Family

System of Measurement

Diameter

Length

Wire Diameter

Cotter Pin Type

Cross-Leg Hairpin

Material

Stainless Steel

Clevis Pin Diameter

Usable Length

Eye Diameter

Finish

Cadmium Yellow-Chromate Plated

Zinc Yellow-Chromate Plated

Pin Type

Performance

Corrosion Resistant

Vibration Resistant

Shaft Diameter

Chain Material

Stainless Steel

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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

OD

REACH

Specifications Met

RoHS

Compliant with Exemptions

ID

Retainer Clearance

Passivation

Thickness

Minimum Hardness

How can we improve?

Help me decide (beta)

1,096 Products

...

Cotter Pins

Hairpin Cotter Pins

Hairpin Cotter Pins

Push into a hole for simple one-step installation

Cotter Pins

Bend the prongs to secure the ends of clevis pins and shafts

Long-Life Wire-Snap Cotter Pins

Long-Life Wire-Snap Cotter Pins

Maintain tension for repeated use with parts you need to disassemble frequently

Long-Life Hairpin Cotter Pins

Long-Life Hairpin Cotter Pins

Maintain tension for repeated use and install with a simple push

Wraparound Cotter Pins

Wraparound Cotter Pins

The most vibration-resistant reusable pins we offer

Hairpin Clips

An alternative to retaining rings—snap into a groove instead of pushing through a hole

Mil. Spec. Cotter Pins

Mil. Spec. Cotter Pins

Manufactured and tested to strict U.S. military standards

Bow-Tie Cotter Pins

Bow-Tie Cotter Pins

The most versatile to install—push or pull into either side of a hole

Hammer-Set Cotter Pins

Hammer-Set Cotter Pins

Unlike standard cotter pins, you only need access to one side to install

Cotter Pin Assortments

Cotter Pin Assortments

Bend the prongs to secure clevis pins and shafts with a variety of hole sizes

Coiled Cotter Pins

Coiled Cotter Pins

Free of sharp ends that can snag and cut surrounding material

Hairpin Cotter Pin Assortments

Hairpin Cotter Pin Assortments

A range of sizes that push into a hole for simple one-step installation

Wire-Snap Cotter Pins

Wire-Snap Cotter Pins

Quick to open and close for parts you need to disassemble frequently

Hairpin Clip Assortments

Hairpin Clip Assortments

A variety of sizes that snap into a groove instead of inserting through a hole

Heavy-Vibration-Resistant Hammer-Set Cotter Pins

Heavy-Vibration-Resistant Hammer-Set Cotter Pins

A wedge keeps pins in place, even under extreme stress and vibration

Mil. Spec. Hairpin Cotter Pins

Mil. Spec. Hairpin Cotter Pins

Meet strict U.S. military specifications and install with a simple push

Cross-Leg Hairpin Cotter Pins

Cross-Leg Hairpin Cotter Pins

More vibration resistant than other hairpin cotter pins but still install with a simple push

Bow-Tie Cotter Pin Assortments

Bow-Tie Cotter Pin Assortments

Push or pull into either side of a hole on a variety of shaft diameters

Other Products

Linch Pins

Slide into holes on clevis pins and shafts and snap down the locking ring so parts won’t fall off

Split Rings

Secure clevis pins, connect components, or add a pull handle; also known as key rings

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