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Cotter Pins

Cotter pins -- also known as split pins -- are thin metal pieces used to lock castle nuts in place on machine parts fitted to a shaft. They may be simple in design, but cotter pins are the key to preventing rotary parts from becoming loose and falling off during use. Let us help you identify the appropriate design for your needs, so you can always have a ready selection of pins on hand.

Cotter Pin Assortments

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1 - 50 of 572 results

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.178Wd X 3 3/4" Lg Hairpin Cotter Fits Hole 3/16'

#73563 | Pkg Qty:5

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1/8 X 2 Cotter Pin Plated

#70726 | Pkg Qty:125

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1/8 X 1-1/2 Cotter Pin Plated

#70724 | Pkg Qty:125

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.12Wd X 2 3/8" Hairpin Cotter Fits Hole 1/8"

#73561 | Pkg Qty:5

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5/32 X 1-1/2 Cotter Pin Plated

#70732 | Pkg Qty:125

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3/32 X 1 Cotter Pin Plated

#70709 | Pkg Qty:125

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Carbon Steel Extended Prong Cotter Pin, 1" L, 1/8" Pin Dia.

#70722 | Pkg Qty:125

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.148Wd X 2 15/16" Hairpin Cotter Fit Hole 5/32"

#73505 | Pkg Qty:25

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5/32 X 2 Cotter Pin Plated

#70734 | Pkg Qty:125

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3/16 X 1-1/2 Cotter Pin Plated

#70739 | Pkg Qty:125

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3/32 X 1-1/2 Cotter Pin Plated

#70711 | Pkg Qty:125

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1/4 X 3 Cotter Pin Plated

#70748 | Pkg Qty:50

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3/16 X 2 Cotter Pin Plated

#70740 | Pkg Qty:125

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Low Carbon Steel Extended Prong Cotter Pin, 2-1/2" L, 5/32" Pin Dia.

#70735 | Pkg Qty:125

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.177Wd X 3 3/4" Hairpin Cotter Fits Hole 3/16"

#73506 | Pkg Qty:25

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Carbon Steel Extended Prong Cotter Pin, 1" L, 1/16" Pin Dia.

#70702 | Pkg Qty:125

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7/64 X 1 Cotter Pin Plated

#70716 | Pkg Qty:125

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3/32 X 2 Cotter Pin Plated

#70713 | Pkg Qty:125

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3/32 X 3/4 Cotter Pin Plated

#70708 | Pkg Qty:125

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.148Wd X 2 11/16" Lg Hairpin Cotter Fits Hole 5/32"

#73562 | Pkg Qty:5

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Low Carbon Steel Extended Prong Cotter Pin, 3" L, 3/16" Pin Dia.

#70742 | Pkg Qty:125

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3/8 X 3 Cotter Pin Plated

#70762 | Pkg Qty:50

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Hairpin Cotter Pin 1/8" Wd X 2-9/16" Lng Fits Hole 9/64"

#73509 | Pkg Qty:25

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.092Wd X 1 7/8" Hairpin Cotter Fits Hole 7/64"

#73560 | Pkg Qty:5

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1/16 X 1-1/2 Cotter Pin Plated

#70704 | Pkg Qty:125

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3/32 X 1-1/4 Cotter Pin Plated

#70710 | Pkg Qty:125

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1/2 X 4 Cotter Pin Plated

#70771 | Pkg Qty:25

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1/8 X 1-1/4 Cotter Pin Plated

#70723 | Pkg Qty:125

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5/32 X 1 Cotter Pin Plated

#70730 | Pkg Qty:125

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1/16 X 3/4 Cotter Pin Plated

#70701 | Pkg Qty:125

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.08Wd X 1 3/16" Long Hairpin Cotter Fits Hole 3/32"

#73503 | Pkg Qty:50

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1/4 X 2 Cotter Pin Plated

#70746 | Pkg Qty:50

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1/16 X 1/2 Cotter Pin Plated

#70700 | Pkg Qty:125

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1/8 X 2-1/2 Cotter Pin Plated

#70727 | Pkg Qty:125

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5/32 X 1-1/4 Cotter Pin Plated

#70731 | Pkg Qty:125

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3/32Wd X 1-5/8 Long Hairpin Cotter Fits Hole 7/64"

#73504 | Pkg Qty:50

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.062Wd 1/16X1 5/16L Hairpin Cotter Fits Hole 5/64"

#73502 | Pkg Qty:50

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.243Wd X 5" Lng Hairpin Cotter Fits Hole 1/4"

#73507 | Pkg Qty:10

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3/16 X 2-1/2 Cotter Pin Plated

#70741 | Pkg Qty:125

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1/16 X 1-1/4 Cotter Pin Plated

#70703 | Pkg Qty:125

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3/32Wd X 2-1/2 Long Hairpin Cotter Fits Hole 7/64"

#73508 | Pkg Qty:50

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APPROVED SUPPLIER

Low Carbon Steel Extended Prong Cotter Pin, 1-3/4" L, 1/8" Pin Dia.

#70725 | Pkg Qty:125

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.042Wd X 1" Long Hair Pin Cotter Fits Hole 3/64"

#73501 | Pkg Qty:50

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1/4 X 1-1/2 Cotter Pin Plated

#70745 | Pkg Qty:50

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1/8 X 3/4 Cotter Pin Plated

#70721 | Pkg Qty:125

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1/4 X 2-1/2 Cotter Pin Plated

#70747 | Pkg Qty:50

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APPROVED SUPPLIER

Carbon Steel Extended Prong Cotter Pin, 1-1/2" L, 7/64" Pin Dia.

#70718 | Pkg Qty:125

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1/8 X 3 Cotter Pin Plated

#70728 | Pkg Qty:125

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APPROVED SUPPLIER

3/8 X 4 Cotter Pin Plated

#70764 | Pkg Qty:50

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Cotter Pin: Extended Prong, Low Carbon Steel, 1008, Zinc Plated, 3 in Fastener Lg, 50 PK

#925930-4 | Pkg Qty:50

$26.50 pkg | $0.53 ea

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1 2 3 4 5

1 - 50 of 572 results

May we suggest

Item: 70726

Pkg Qty: 125

Cotter Pin 1/8 X 2

Item: 70724

Pkg Qty: 125

Cotter Pin 1/8 X 1-1/2

Item: 70732

Pkg Qty: 125

Cotter Pin 5/32 X 1-1/2

Item: 70769

Pkg Qty: 25

Cotter Pin 1/2 X 3

Item: 70740

Pkg Qty: 125

Cotter Pin 3/16 X 2

Item: 70742

Pkg Qty: 125

Cotter Pin 3/16 X 3

Item: 70739

Pkg Qty: 125

Cotter Pin 3/16 X 1-1/2

Item: 70764

Pkg Qty: 50

Cotter Pin 3/8 X 4

Item: 70748

Pkg Qty: 50

Cotter Pin 1/4 X 3

Item: 70771

Pkg Qty: 25

Cotter Pin 1/2 X 4

Item: 70762

Pkg Qty: 50

Cotter Pin 3/8 X 3

Item: 73506

Pkg Qty: 25

Hairpin Cotter .177WD X 3 3/4"

Item: 73505

Pkg Qty: 25

Hairpin Cotter .148WD X2 15/16

Item: 70734

Pkg Qty: 125

Cotter Pin 5/32 X 2

Item: 70722

Pkg Qty: 125

Cotter Pin 1/8 X 1

Item: 70741

Pkg Qty: 125

Cotter Pin 3/16 X 2-1/2

Item: 73562

Pkg Qty: 5

Hairpin Cotter .148WD X2 11/16

Item: 73563

Pkg Qty: 5

Hairpin Cotter .178WD X 3 3/4"

Item: 70709

Pkg Qty: 125

Cotter Pin 3/32 X 1

Item: 70711

Pkg Qty: 125

Cotter Pin 3/32 X 1-1/2

Item: 74825

Pkg Qty: 25

Rubber Cush Clip 3/4, 1/4 Mnt

Item: 72299

Pkg Qty: 25

Hose Clamp #6 7/16 - 25/32

Item: 73554

Pkg Qty: 5

Snap Pin 1/4X2-1/2

Item: 72314

Pkg Qty: 25

Hose Clamp #4 7/32 - 5/8

Item: 72301

Pkg Qty: 25

Hose Clamp #10 9/16 - 1 1/16

Item: 74823

Pkg Qty: 25

Rubber Cush Clip 1/2, 1/4 Mnt

Item: 72305

Pkg Qty: 10

Hose Clamp #24 1 1/16 - 2

Item: 72302

Pkg Qty: 25

Hose Clamp #12 11/16 - 1 1/4

Item: 72306

Pkg Qty: 10

Hose Clamp #28 1 5/16 - 2 1/4

Item: 8852

Pkg Qty: 50

Rivet Nut Flange Knurl 10-24

Item: 73556

Pkg Qty: 5

Snap Pin 5/16X2-1/2

Item: 72331

Pkg Qty: 25

Hose Clamp #10 Lined

Item: 6536

Pkg Qty: 12

Imp Brake Parts Cleaner 14 Oz

Item: 91200

Pkg Qty: 5

A/B Push Union 1/4

Item: 91201

Pkg Qty: 5

A/B Push Union 3/8

$94.24 pkg | $0.47 ea

Item: 918752-6

Pkg Qty: 200

Absorbent Pad,36 Gal. PK200

Item: 71668

Pkg Qty: 10

Electrical Tape 3/4" X 60'

$10.93 pkg | $10.93 ea

Item: 260022-7

Pkg Qty: 1

Imperial 22" Beam Plus Wiper

$9.67 pkg | $9.67 ea

Item: 83722-7

Pkg Qty: 1

Imperial 22" Winter Wiper

$43.80 pkg | $3.65 ea

Item: 6792

Pkg Qty: 12

Imp Econ Brake Part Clner 14OZ

$99.99 pkg | $99.99 ea

Item: 921993-2

Pkg Qty: 1

Pry Bar Set,Hardend And

$431.00 pkg | $431.00 ea

Item: 930374-8

Pkg Qty: 1

Portabl Cord,16/4 Awg,250 Ft.,

$69.06 pkg | $69.06 ea

Item: 938337-6

Pkg Qty: 1

Hard Hat,Type 2, Class E,Yellow

$590.09 pkg | $590.09 ea

Item: 943469

Pkg Qty: 1

Socket Set,1/4" Drive,51 Pcs.,

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What are the Benefits of Using Cotter Pins?

Using cotter pins can help to keep your machines safe and secure. They are designed to withstand wear and tear due to vibrations and can help to prevent rotary parts from becoming loose and falling off during use.

How Do Cotter Pins Work?

Cotter pins are inserted into holes in a castle nut or bolt with a hole, which then holds it in place on the shaft it is attached to. The cotter pin is then twisted to secure it in the hole and the ends of the pins are bent over to prevent it from coming loose. This ensures the fastener is securely locked in place.

What are Cotter Pins?

Cotter pins -also known as split pins - are thin metal pieces designed to lock castle nuts and fasteners in place on machine parts. They are simple yet extremely effective in preventing rotary parts from becoming loose and falling off during use.