Metric Cotter Pins | McMaster-Carr

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	System of Measurement System of Measurement	Show

Metric

	System of Measurement System of Measurement	Hide

Inch

Metric

	Length Length

	Diameter Diameter

	Material Material

Stainless Steel

Steel

	Finish Finish

Zinc Plated

	Wire Diameter Wire Diameter

	Cotter Pin Type Cotter Pin Type


Hairpin	Standard

	For Clevis Pin Diameter For Clevis Pin Diameter

	Pin Type Pin Type	Show

	Cotter

	Pin Type Pin Type	Hide


Dowel	Clevis

Quick Release	Cotter

Core	Spring

Ejector	Captive

Taper

	Eye Diameter Eye Diameter

	Specifications Met Specifications Met

ASME

DIN

ISO

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

	Passivation Passivation

Not Passivated

Passivated

	Container Type Container Type

Plastic Box

	Number of Pieces Number of Pieces

100

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194 Products

Hairpin Cotter Pins

Also known as hitch pin clips and R-clips, these pins are easy to install and remove. Use them to secure the ends of clevis pins and shafts to keep components in place.

Zinc-plated steel pins have good strength and some corrosion resistance.

Pins that meet DIN 11024 adhere to strict standards for size and material.

For technical drawings and 3-D models, click on a part number.

Metric 18-8 Stainless Steel
For Clevis Pin Dia.	Wire Dia.	Eye Dia.	Lg.	Specifications Met	Pkg. Qty.		Pkg.
9mm-14mm	2mm	10mm	57mm	DIN 11024	1	000000000	00000
10mm-16mm	3mm	18mm	72mm	DIN 11024	1	000000000	0000
16mm-20mm	4mm	20mm	74mm	DIN 11024	1	000000000	0000
20mm-28mm	5mm	24mm	102mm	DIN 11024	1	000000000	00000
28mm-40mm	6mm	30mm	126mm	DIN 11024	1	000000000	00000
Metric 316 Stainless Steel
9mm-14mm	2mm	10mm	48mm	DIN 11024	1	000000000	0000
9mm-15mm	2.5mm	10mm	53mm	DIN 11024	1	000000000	0000
10mm-16mm	3mm	18mm	70mm	DIN 11024	1	000000000	00000
16mm-20mm	4mm	20mm	76mm	DIN 11024	1	000000000	00000
20mm-28mm	5mm	24mm	100mm	DIN 11024	1	000000000	00000
28mm-40mm	6mm	30mm	125mm	DIN 11024	1	000000000	00000
Metric Zinc-Plated 1050-1095 Spring Steel
6mm-11mm	2mm	10mm	50mm	__	5	000000000	0000
9mm-14mm	2mm	10mm	57mm	DIN 11024	10	000000000	0000
9mm-14mm	2.5mm	10mm	50mm	__	5	000000000	0000
10mm-16mm	3mm	18mm	72mm	DIN 11024	5	000000000	0000
10mm-16mm	3.5mm	18mm	70mm	__	5	000000000	0000
16mm-20mm	4mm	20mm	74mm	DIN 11024	5	000000000	0000
16mm-20mm	4mm	21mm	85mm	__	5	000000000	0000
16mm-26mm	4.5mm	21mm	83mm	__	10	000000000	0000
20mm-28mm	5mm	24mm	85mm	__	5	000000000	00000
20mm-28mm	5mm	24mm	102mm	DIN 11024	5	000000000	00000
28mm-40mm	6mm	24mm	105mm	__	5	000000000	00000
28mm-40mm	6mm	30mm	126mm	DIN 11024	1	000000000	0000
28mm-45mm	7mm	30mm	105mm	__	1	000000000	0000
28mm-45mm	7mm	30mm	127mm	DIN 11024	1	000000000	0000
30mm-45mm	8mm	28mm	110mm	__	1	000000000	0000
30mm-45mm	8mm	28mm	132mm	DIN 11024	1	000000000	0000

Strong-Hold Hairpin Cotter Pins

A coil makes a stronger grip than standard hairpin cotter pins to prevent accidental release. Also known as hitch pin clips and R-clips, these pins are easy to install and remove. Use them to secure the ends of clevis pins and shafts to keep components in place.

Steel pins have good strength. Those with a zinc-plated finish have some corrosion resistance.

18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

Metric 18-8 Stainless Steel
For Clevis Pin Dia.	Wire Dia.	Eye Dia.	Lg.	Pkg. Qty.		Pkg.
8mm-14mm	2mm	11mm	56mm	1	000000000	00000
14mm-20mm	3mm	17mm	73mm	1	000000000	0000
17mm-24mm	4mm	26mm	94mm	1	000000000	0000
24mm-36mm	6mm	32mm	142mm	1	000000000	00000
Metric Zinc-Plated 1050-1095 Spring Steel
8mm-14mm	2mm	11mm	56mm	1	000000000	0000
14mm-20mm	3mm	17mm	73mm	1	000000000	0000
17mm-24mm	4mm	26mm	94mm	1	000000000	0000
18mm-30mm	5mm	27mm	110mm	1	000000000	0000
24mm-36mm	6mm	32mm	142mm	1	000000000	0000
26mm-40mm	7mm	31mm	152mm	1	000000000	0000

Cotter Pins

Also known as split pins, these have one prong slightly longer than the other so they’re easy to open. Bend prongs outward to secure. Use them to secure the ends of clevis pins and shafts to keep components in place.

Steel pins have good strength. Pins with a zinc-plated finish have some corrosion resistance.

18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic. Passivated pins offer added protection against corrosion and oxidation.

For technical drawings and 3-D models, click on a part number.

Metric Zinc-Plated 1050-1095 Spring Steel

1 mm Dia.
Lg., mm	Specifications Met	Pkg. Qty.		Pkg.
8	DIN 94, ISO 1234	200	000000000	00000
10	DIN 94, ISO 1234	200	000000000	0000
12	DIN 94, ISO 1234	200	000000000	00000
16	DIN 94, ISO 1234	200	000000000	0000
20	DIN 94, ISO 1234	200	000000000	0000
25	DIN 94, ISO 1234	200	000000000	00000
1.6 mm Dia.
8	DIN 94, ISO 1234	200	000000000	00000
10	DIN 94, ISO 1234	200	000000000	00000
12	DIN 94, ISO 1234	200	000000000	00000
16	DIN 94, ISO 1234	200	000000000	00000
20	DIN 94, ISO 1234	200	000000000	00000
25	DIN 94, ISO 1234	200	000000000	00000
32	DIN 94, ISO 1234	200	000000000	00000
36	DIN 94, ISO 1234	200	000000000	00000
40	DIN 94, ISO 1234	200	000000000	00000
2 mm Dia.
10	DIN 94, ISO 1234	50	000000000	0000
12	DIN 94, ISO 1234	50	000000000	0000
16	DIN 94, ISO 1234	50	000000000	0000
18	DIN 94, ISO 1234	50	000000000	0000
20	DIN 94, ISO 1234	50	000000000	0000
22	DIN 94, ISO 1234	50	000000000	0000
25	DIN 94, ISO 1234	25	000000000	0000
32	DIN 94, ISO 1234	25	000000000	0000
36	DIN 94, ISO 1234	50	000000000	0000
40	DIN 94, ISO 1234	25	000000000	0000
45	DIN 94, ISO 1234	25	000000000	0000
50	DIN 94, ISO 1234	25	000000000	0000
2.5 mm Dia.
16	DIN 94, ISO 1234	50	000000000	0000
20	DIN 94, ISO 1234	50	000000000	0000
25	DIN 94, ISO 1234	25	000000000	0000
32	DIN 94, ISO 1234	25	000000000	0000
36	DIN 94, ISO 1234	50	000000000	0000
40	DIN 94, ISO 1234	25	000000000	00000
45	DIN 94, ISO 1234	25	000000000	0000
50	DIN 94, ISO 1234	25	000000000	0000
3.2 mm Dia.
10	DIN 94, ISO 1234	50	000000000	0000
16	DIN 94, ISO 1234	50	000000000	0000
18	DIN 94, ISO 1234	50	000000000	0000
20	DIN 94, ISO 1234	50	000000000	0000
25	DIN 94, ISO 1234	25	000000000	0000
28	DIN 94, ISO 1234	25	000000000	0000
32	DIN 94, ISO 1234	25	000000000	0000
36	DIN 94, ISO 1234	25	000000000	0000
40	DIN 94, ISO 1234	25	000000000	0000
45	DIN 94, ISO 1234	25	000000000	0000
50	DIN 94, ISO 1234	25	000000000	0000
63	DIN 94, ISO 1234	25	000000000	0000
4 mm Dia.
20	DIN 94, ISO 1234	50	000000000	0000
25	DIN 94, ISO 1234	25	000000000	0000
28	DIN 94, ISO 1234	25	000000000	0000
32	DIN 94, ISO 1234	25	000000000	0000
36	DIN 94, ISO 1234	25	000000000	0000
40	DIN 94, ISO 1234	25	000000000	0000
45	DIN 94, ISO 1234	25	000000000	0000
50	DIN 94, ISO 1234	25	000000000	0000
56	DIN 94, ISO 1234	25	000000000	0000
63	DIN 94, ISO 1234	25	000000000	0000
71	DIN 94, ISO 1234	25	000000000	0000

5 mm Dia.
Lg., mm	Specifications Met	Pkg. Qty.		Pkg.
25	DIN 94, ISO 1234	25	000000000	00000
32	DIN 94, ISO 1234	25	000000000	0000
36	DIN 94, ISO 1234	25	000000000	0000
40	DIN 94, ISO 1234	25	000000000	0000
45	DIN 94, ISO 1234	25	000000000	00000
50	DIN 94, ISO 1234	25	000000000	00000
56	DIN 94, ISO 1234	25	000000000	00000
63	DIN 94, ISO 1234	25	000000000	00000
71	DIN 94, ISO 1234	25	000000000	00000
80	DIN 94, ISO 1234	25	000000000	00000
100	DIN 94, ISO 1234	25	000000000	00000
6.3 mm Dia.
40	DIN 94, ISO 1234	10	000000000	0000
50	DIN 94, ISO 1234	10	000000000	0000
56	DIN 94, ISO 1234	10	000000000	0000
63	DIN 94, ISO 1234	10	000000000	0000
71	DIN 94, ISO 1234	10	000000000	0000
80	DIN 94, ISO 1234	10	000000000	0000
90	DIN 94, ISO 1234	10	000000000	00000
100	DIN 94, ISO 1234	10	000000000	00000
8 mm Dia.
40	DIN 94, ISO 1234	10	000000000	0000
45	DIN 94, ISO 1234	10	000000000	0000
50	DIN 94, ISO 1234	10	000000000	0000
56	DIN 94, ISO 1234	10	000000000	00000
63	DIN 94, ISO 1234	10	000000000	00000
71	DIN 94, ISO 1234	10	000000000	00000
80	DIN 94, ISO 1234	10	000000000	00000
90	DIN 94, ISO 1234	10	000000000	00000
100	DIN 94, ISO 1234	10	000000000	00000
125	DIN 94, ISO 1234	5	000000000	00000
10 mm Dia.
63	DIN 94, ISO 1234	10	000000000	00000
71	DIN 94, ISO 1234	5	000000000	00000
80	DIN 94, ISO 1234	5	000000000	00000
90	DIN 94, ISO 1234	5	000000000	00000
100	DIN 94, ISO 1234	5	000000000	00000
125	DIN 94, ISO 1234	1	000000000	0000
140	DIN 94, ISO 1234	1	000000000	0000
13 mm Dia.
125	DIN 94, ISO 1234	1	000000000	0000
140	DIN 94, ISO 1234	1	000000000	0000

Metric 18-8 Stainless Steel

1.6 mm Dia.
Lg., mm	Passivation	Specifications Met	Pkg. Qty.		Pkg.
8	Passivated	DIN 94, ISO 1234	100	000000000	00000
10	Passivated	DIN 94, ISO 1234	100	000000000	0000
12	Passivated	DIN 94, ISO 1234	100	000000000	0000
14	Passivated	DIN 94, ISO 1234	100	000000000	0000
16	Passivated	DIN 94, ISO 1234	100	000000000	0000
20	Passivated	DIN 94, ISO 1234	100	000000000	0000
22	Passivated	DIN 94, ISO 1234	100	000000000	00000
25	Passivated	DIN 94, ISO 1234	100	000000000	00000
28	Passivated	DIN 94, ISO 1234	100	000000000	00000
2 mm Dia.
10	Passivated	DIN 94, ISO 1234	100	000000000	0000
12	Passivated	DIN 94, ISO 1234	100	000000000	00000
14	Passivated	DIN 94, ISO 1234	100	000000000	00000
16	Passivated	DIN 94, ISO 1234	100	000000000	00000
18	Passivated	DIN 94, ISO 1234	100	000000000	00000
20	Passivated	DIN 94, ISO 1234	100	000000000	00000
22	Passivated	DIN 94, ISO 1234	100	000000000	00000
25	Passivated	DIN 94, ISO 1234	100	000000000	00000
28	Passivated	DIN 94, ISO 1234	100	000000000	00000
32	Passivated	DIN 94, ISO 1234	50	000000000	00000
40	Passivated	DIN 94, ISO 1234	50	000000000	00000
2.5 mm Dia.
12	Passivated	DIN 94, ISO 1234	100	000000000	00000
16	Passivated	DIN 94, ISO 1234	100	000000000	00000
18	Passivated	DIN 94, ISO 1234	100	000000000	00000
20	Passivated	DIN 94, ISO 1234	100	000000000	00000
22	Passivated	DIN 94, ISO 1234	100	000000000	00000
25	Passivated	DIN 94, ISO 1234	100	000000000	00000
50	Passivated	DIN 94, ISO 1234	100	000000000	00000
3.2 mm Dia.
16	Passivated	DIN 94, ISO 1234	50	000000000	00000
18	Passivated	DIN 94, ISO 1234	50	000000000	00000
20	Passivated	DIN 94, ISO 1234	50	000000000	00000
22	Passivated	DIN 94, ISO 1234	50	000000000	00000
25	Passivated	DIN 94, ISO 1234	25	000000000	00000
32	Passivated	DIN 94, ISO 1234	25	000000000	00000
40	Passivated	DIN 94, ISO 1234	25	000000000	0000
45	Passivated	DIN 94, ISO 1234	25	000000000	00000
50	Passivated	DIN 94, ISO 1234	25	000000000	00000
4 mm Dia.
20	Passivated	DIN 94, ISO 1234	25	000000000	00000
25	Passivated	DIN 94, ISO 1234	25	000000000	00000
28	Passivated	DIN 94, ISO 1234	25	000000000	00000
32	Passivated	DIN 94, ISO 1234	25	000000000	00000
40	Passivated	DIN 94, ISO 1234	25	000000000	00000
80	Passivated	DIN 94, ISO 1234	25	000000000	00000
5 mm Dia.
32	Passivated	DIN 94, ISO 1234	10	000000000	00000
36	Passivated	DIN 94, ISO 1234	10	000000000	00000
40	Passivated	DIN 94, ISO 1234	10	000000000	00000
45	Passivated	DIN 94, ISO 1234	10	000000000	00000
50	Passivated	DIN 94, ISO 1234	10	000000000	00000
80	Passivated	DIN 94, ISO 1234	10	000000000	00000
6.3 mm Dia.
32	Passivated	DIN 94, ISO 1234	5	000000000	00000
40	Passivated	DIN 94, ISO 1234	5	000000000	00000
45	Passivated	DIN 94, ISO 1234	5	000000000	00000
50	Passivated	DIN 94, ISO 1234	5	000000000	00000
56	Passivated	DIN 94, ISO 1234	5	000000000	00000
63	Passivated	DIN 94, ISO 1234	5	000000000	00000
90	Passivated	DIN 94, ISO 1234	5	000000000	00000
8 mm Dia.
56	Passivated	DIN 94, ISO 1234	5	000000000	00000
63	Passivated	DIN 94, ISO 1234	5	000000000	00000
90	Passivated	DIN 94, ISO 1234	5	000000000	00000
100	Passivated	DIN 94, ISO 1234	5	000000000	00000
10 mm Dia.
71	Passivated	DIN 94, ISO 1234	5	000000000	00000

Cotter Pin Assortments

Also known as split pins, these have one prong slightly longer than the other so they’re easy to open. Bend prongs outward to secure.

Zinc-plated steel cotter pins resist corrosion in wet environments.

Metric
Number of Pieces	Sizes Included	Container Type	Specifications Met		Each
Zinc-Plated 1004-1045 Carbon Steel
100	2.5 mm to 8 mm Dia. in 20 mm to 63 mm Lengths	Plastic Box	ASME B18.8.200M	000000000	000000